Rafa Nadal

[PaulP]

Who made that claim?

The fact remains that 40% of their H2H matches have been on clay and that must skew the overall H2H.

That still leaves 24 out of 40 matches that are not on clay. Federer wins the grass h2h 3-1 and the hard court 11-9. The grass is probably too small a sample space to quibble about, but the hardcourt is fairly even, and not even close to being a domination like Nadal on clay. I would suggest that hardcourt better suits Federer than Nadal.