I dont know. I would ask a different question: what tournament Roger played the best match on a final?! Or, at least, a great match on a final. Lets see:
Wimbledon 03: the semi-final was better, but he played great the finals. Australia 04: I agree. Wimbledon 04: not Roger's greatest match. USO 04: best final ever from Roger. Wimbledon 05: great final. USO05: average final, with ups and downs (I wouldnt say that Roger played his A game on most of the match), AO06: average match, but far from his A game (Roger won the last set with Baggy very tired), SW19 06: average match, the worst he played on that year (Roger was amazing up until the finals). USO 06: average match, Roger played what he needed to play (Roger had to play a better match this year against Pandy). AO 07: a good final, but impossible to top his semi-final performance. SW19 07: average performance, on an average tournament overall. USO07: worst match he played on a final, but overall he played a great tournament.
So ... It is not as if Roger always played great matches on finals. I guess memory can be a bit tricky sometimes.
There you go.
Plus i federer played quite well at the AO. We must give some credit to his opponent - esp nadal who some believe shouldnt even win games off federer on grass.
The djokovic final is much more worrying when it comes to passive play. If he plays like that, things will become different.