Djokovic is a Grinder
Novak is good, better than Federer and Murray now and deserves to be where he is, no question.
He is consistent in maybe all aspects of the game, you name it: Serve, volley, returns, retrives, defends and attacks.
But he does so almost the same way Nadal did, only with a different game style. They both go for shots that puts too much pressure on their bodies and are too risky. He won the match yesterday but he bled doing so.
This is the perfect recipe for early exit from the top. You can call it a Fedfan rancor if you want but his game style is there and it's obvious.
Novak will be overtaken by Murray in 2013 for the number one ranking, and the former's injury problems will only help that happen.