1.federer has been ill from mononucleusis virus since 2008
2.federer just come back from injury
3.federer had the hardest draw while nadal had the easiest draw
4.federer 35 year old
5.federer had 2 5 setter matches before the final
6.prime federer before the illness owned prime nadal for straight 5 years
in this match federer get back to play his 60 percent in a long time and when he plays around 70 percent, nadal can't beat federer. if federer can play 80 percent, it would have been easy 3-0 wins for federer.