Dude, you're not making sense at all.
Federer's prime is 2004-2008. In this period he faced Nadal a grand total of ZERO TIMES at the AO and USO. Nadal wasn't good enough to get to Federer. And he was a highly seeded player, which meant he had to get at least to a semifinal to meet Federer at those events. He was beaten along the way by lesser players.
So, pre 2009 Nadal isn't good enough to even get to Federer on hard courts, but according to you, he was better than Federer on this surface. How does that make sense?
Nadal started to beat Federer at AO and USO, as he entered his prime and Federer declined. Hell, at USO I don't even know if they've ever met. Don't think so. When Federer was beasting it and was in his prime, Nadal was crap at USO. When Nadal started to make the finals, Federer started to be bad at this event, losing to Berdych, Robredo, Millman and others.