I am surprised why most have picked Federer to be ranked over Nadal just based on Nadal's "injury related" absence this year. I will not at all be surprised if Nadal comes back and dominates like he was never away from the tour. With Djoko and Murray, consistency is an issue, so you can never be sure of how they will fare. With Fed growing old and perhaps not being as motivated after breaking almost every possible record there is to break, if Djoko-Murray slump a bit, Nadal will easily regain #1 ranking like he did in 2010.
(Vamos Brigade logic) Fed follows rules => He is a cheater. Nadal breaks rules => You are a hater