1) Federer beat Djokovic at French Open
2) He almost beat him at US Open (had a few match points, was leading 5-3, 40-15 in the fifth set), not an excuse but it obviously means he had the ability to beat peak Djokovic. (If Federer won this match, he would've led 2-1 in their 3 slam meetings).
3) Don't forget that 2011 Federer is not peak Federer. If it was peak Federer, the result of their last match would very likely have been different.
The gap between 2011 Federer and 2011 Djokovic is not that big.
So stop saying peak Djokovic would destroy peak Federer, aight?
2011 French Open:
2011 US Open where Federer blew his chance to win the match (go to 21:46)
Nobody says Peak Djokovic would Destroy Peak Federer in that hypothetical match-up.
People (except Federer fans) just say that Peak Djokovic (1 year time) looks more Impressive than Peak Federer.
Perhaps Federer was just too unlucky that he didn't have such competition as Djokovic in 2011 to prove how great his peak was. Not his fault. Anyway he's still luckier than Laver, the man who was absent in Slams for half a decade during his prime but still called it a career with 11 Slams and 2 CYGS.
Wait, are you a Nadal fan trying to provoke violence between Fedr and Djoker fanbase? : D