How quickly people have forgotten. Federer is the only player to win the AO without dropping a set since the establishment of the ATP.
And about the rubbish competition argument, one can argue Nole wouldn't have beaten Safin in 2005, and he would be sitting on 3 AO. If 2005 Federer had Murray instead of Safin, he would have 5 AO by now.
Federer > Davydenko > Nadal > Federer
Nadalgaenger: "Djokovic is clearly better than Pete"