Towser83
G.O.A.T.
Ok, this might be somewhat useless, but I'm very bored 
Basically I was thinking about Novak beating Nadal 5 times in a row and on 3 surfaces and thinking about how this is even more dominant than Nadal was over Federer. So I thought I'd compare each players biggest winning streaks against each other in several ways. Warning! This will get complicated, and I'm bound to have got a couple of things wrong, so feel free to correct.
Federer defeating Djokovic
Most matches won against Novak in a row -
4 (first 4 matches they played Monte Carlo 2006, Davis Cup 2006, Australian Open 2007, Dubai 2007. After which Federer best winning streak was 3 matches last year)
Most sets in a row
7 sets from the above 4 match streak starting in the fisrt set of Davis Cup and ending in the second set of Dubai which Novak won on a tiebreak.
Most finals in a row
2 - US Open 2007, Cinnci 2009.
Most surfaces in a row -
2 -Clay and Hardcourt
Djokovic beating Federer
Most matches in a row
3 - Australian Open 2011, Dubai 2011, Indian Wells 2011
Most sets in a row
6 sets in a row - from Australian Open 2011 to first set of Indian Wells 2011, ended by Federer winning second set of Indian Wells 6-3
Most Finals in a row
1
Most surfaces in a row
2- Clay and hardcourt
Nadal beating Djokovic
Most matches in a row
5 - Olympics 2008, Davis Cup 2009, Monte Carlo 2009, Rome 2009, Madrid 2009 (has 2 other streaks of 3 matches)
Most sets in a row
6 sets - Hamburg 2008 final set, RG 2008, Queens 2008 (also 5 set streak 3 times - Rome 2007, Roland Garros 2007. Final set of Olympics 2008, Davis Cup 2009 and first set Monte Carlo 2009. US Open 2010 final 2 sets, WTF 2010, first set Indian Wells 2011)
Most Finals in a row
5 - Indian Wells 2007, Queens 2008, Monte Carlo 2009, Rome 2009, US Open 2010.
Most surfaces in a row
2 - Clay and grass, also clay and Hard
Djokovic beating Nadal
Most Matches in a row
5 - Indian Wells 2011, Miami 2011, Madrid 2011, Rome 2011, Wimbledon 2011 (all finals)
Most sets in a row
8 - Miami 2011 final 2 sets, Madrid 2011, Rome 2011, Wimbledon 2011 first 2 sets.
Most finals in a row.
5 - Indian Wells 2011, Miami 2011, Madrid 2011, Rome 2011, Wimbledon 2011.
Most surfaces in a row
3 - Hard, Clay and Grass.
Federer beating Nadal
Most matches in a row
2 - done twice- Wimbledon 2006, TMC 2006. Wimledon 2007, TMC 2007.
Most sets in a row
3 - done twice, both times, finalset of wimbledon and straight sets win at the TMC.
Most finals in a row.
1.
Most surfaces in a row
2 - Grass and Hard (again the wimbeldon TMC double, done twice)
Nadal beating Federer
Most matches in a row
5 matches done twice. RG 2005, Dubai 2006, Monte Carlo 2006, Rome 2006, RG 2006. And - Monte Carlo 2008, Hamburg 2008, RG 2008, Wimbledon 2008, AO 2009.
Most sets in a row
6 - Hamburg 2008 final set, RG 2008, first 2 sets Wimbledon 2008. Funny enough,in his first 5 match streak the most sets in a row was only 3, but he won 4 in a row in their first 2 matches which they split. Nadal won in 2 straight sets in Miami 2004, and the first 2 sets Miami 2005, before Federer came back towin the next 3 sets.
Most Finals in a row.
5 - Monte Carlo 2008, Hamburg 2008, RG 2008, Wimbledon 2008, AO 2009.
Most surfaces in a row
3
Put simply you can see Federer has the edge against Novak but loses to Rafa, Novak however equals or beats Nadal in each stat.
Looking closer, now we see Novak's most matches in a row over Rafa is equal to Rafa's matches in a row over him and Rafa's matches in a row over Federer (5), and also better than Federer's over Novak (4). Although Novak has only beaten Federer 3 times in a row and Federer has beaten him 4 times. So Djokovic has yet to dominate Federer as much as Federer has done to him, but his dominance over Nadal is as good as any between the 3 players.
Novak's sets in a row ( 8 )is better than Nadal's sets in a row against him and Federer (6) and better than Federer's record over Novak (7). Again though Federer's sets in a row Against Djokovic is more than Djokovic against Federer (6). But he has the best winning streak in sets of any combination of the 3.
His finals in a row over Nadal is as good as Nadal's record over him and over Federer (5), and better than Federer's record over Novak (2). However Federer has beaten Novak in more finals in a row compared to him beating Federer in finals (1).
He has also beaten Nadal on all 3 surfaces without losing a match to him inbetween. Nadal has never done this to Novak, Federer has never done it to Novak or Nadal.
It becomes apparent that Federer whilst being dominated by Nadal, does better against Djokovic than Rafa does. Even on H2H it is now 14-9 to Federer against Novak (5 match difference) but 16-12 for Nadal over Novak (4 match difference)
In every aspect, this current streak against Nadal is as good or better than Nadal's best steak against Novak or Federer, but Novak is still to dominate Federer more than Federer has dominated him.
Rock, Paper, scissors indeed.

Basically I was thinking about Novak beating Nadal 5 times in a row and on 3 surfaces and thinking about how this is even more dominant than Nadal was over Federer. So I thought I'd compare each players biggest winning streaks against each other in several ways. Warning! This will get complicated, and I'm bound to have got a couple of things wrong, so feel free to correct.
Federer defeating Djokovic
Most matches won against Novak in a row -
4 (first 4 matches they played Monte Carlo 2006, Davis Cup 2006, Australian Open 2007, Dubai 2007. After which Federer best winning streak was 3 matches last year)
Most sets in a row
7 sets from the above 4 match streak starting in the fisrt set of Davis Cup and ending in the second set of Dubai which Novak won on a tiebreak.
Most finals in a row
2 - US Open 2007, Cinnci 2009.
Most surfaces in a row -
2 -Clay and Hardcourt
Djokovic beating Federer
Most matches in a row
3 - Australian Open 2011, Dubai 2011, Indian Wells 2011
Most sets in a row
6 sets in a row - from Australian Open 2011 to first set of Indian Wells 2011, ended by Federer winning second set of Indian Wells 6-3
Most Finals in a row
1
Most surfaces in a row
2- Clay and hardcourt
Nadal beating Djokovic
Most matches in a row
5 - Olympics 2008, Davis Cup 2009, Monte Carlo 2009, Rome 2009, Madrid 2009 (has 2 other streaks of 3 matches)
Most sets in a row
6 sets - Hamburg 2008 final set, RG 2008, Queens 2008 (also 5 set streak 3 times - Rome 2007, Roland Garros 2007. Final set of Olympics 2008, Davis Cup 2009 and first set Monte Carlo 2009. US Open 2010 final 2 sets, WTF 2010, first set Indian Wells 2011)
Most Finals in a row
5 - Indian Wells 2007, Queens 2008, Monte Carlo 2009, Rome 2009, US Open 2010.
Most surfaces in a row
2 - Clay and grass, also clay and Hard
Djokovic beating Nadal
Most Matches in a row
5 - Indian Wells 2011, Miami 2011, Madrid 2011, Rome 2011, Wimbledon 2011 (all finals)
Most sets in a row
8 - Miami 2011 final 2 sets, Madrid 2011, Rome 2011, Wimbledon 2011 first 2 sets.
Most finals in a row.
5 - Indian Wells 2011, Miami 2011, Madrid 2011, Rome 2011, Wimbledon 2011.
Most surfaces in a row
3 - Hard, Clay and Grass.
Federer beating Nadal
Most matches in a row
2 - done twice- Wimbledon 2006, TMC 2006. Wimledon 2007, TMC 2007.
Most sets in a row
3 - done twice, both times, finalset of wimbledon and straight sets win at the TMC.
Most finals in a row.
1.
Most surfaces in a row
2 - Grass and Hard (again the wimbeldon TMC double, done twice)
Nadal beating Federer
Most matches in a row
5 matches done twice. RG 2005, Dubai 2006, Monte Carlo 2006, Rome 2006, RG 2006. And - Monte Carlo 2008, Hamburg 2008, RG 2008, Wimbledon 2008, AO 2009.
Most sets in a row
6 - Hamburg 2008 final set, RG 2008, first 2 sets Wimbledon 2008. Funny enough,in his first 5 match streak the most sets in a row was only 3, but he won 4 in a row in their first 2 matches which they split. Nadal won in 2 straight sets in Miami 2004, and the first 2 sets Miami 2005, before Federer came back towin the next 3 sets.
Most Finals in a row.
5 - Monte Carlo 2008, Hamburg 2008, RG 2008, Wimbledon 2008, AO 2009.
Most surfaces in a row
3
Put simply you can see Federer has the edge against Novak but loses to Rafa, Novak however equals or beats Nadal in each stat.
Looking closer, now we see Novak's most matches in a row over Rafa is equal to Rafa's matches in a row over him and Rafa's matches in a row over Federer (5), and also better than Federer's over Novak (4). Although Novak has only beaten Federer 3 times in a row and Federer has beaten him 4 times. So Djokovic has yet to dominate Federer as much as Federer has done to him, but his dominance over Nadal is as good as any between the 3 players.
Novak's sets in a row ( 8 )is better than Nadal's sets in a row against him and Federer (6) and better than Federer's record over Novak (7). Again though Federer's sets in a row Against Djokovic is more than Djokovic against Federer (6). But he has the best winning streak in sets of any combination of the 3.
His finals in a row over Nadal is as good as Nadal's record over him and over Federer (5), and better than Federer's record over Novak (2). However Federer has beaten Novak in more finals in a row compared to him beating Federer in finals (1).
He has also beaten Nadal on all 3 surfaces without losing a match to him inbetween. Nadal has never done this to Novak, Federer has never done it to Novak or Nadal.
It becomes apparent that Federer whilst being dominated by Nadal, does better against Djokovic than Rafa does. Even on H2H it is now 14-9 to Federer against Novak (5 match difference) but 16-12 for Nadal over Novak (4 match difference)
In every aspect, this current streak against Nadal is as good or better than Nadal's best steak against Novak or Federer, but Novak is still to dominate Federer more than Federer has dominated him.
Rock, Paper, scissors indeed.