People call Fed's RG a fluke because his master Nadal was injured that year. Federer never was as dominant at USO+AO and Nadal isn't owned by Federer. Plus, Nadal even beat him at the AO and Djokovic (his worst match up) at the USO. Ridiculous comparison.
It's two way road mate. Federer won RG in 2009 because Nadal wasn't able to beat Soderling. Who cares if he was injured or not ?
Did Rafafans cared Federer was injured in Indian Wells this year ?
Federer won 5 USO and 4 AO and surface slowing cost him another titles. (same argument as Nadal's injuries costing him GS titles)
They never met at USO and at AO only in Plexicushion era, and be honest, Nadal knows how to play Federer on high bouncing surfaces ..
Still I think if they met at USO 2010 final, it would be bigger battle than from Djokovic. (hard to prove, same as if they both meet at RG 2009).
But let's stick to topic, and it is Madrid final between best claycourter of all time and Stan Wawrinka