Originally Posted by Jerry Seinfeld
nadal has a winning records vs roger...maybe he is better
He is undoubtedly better on clay.
It should be considered that tennis is about match-ups, Nadal matches-up well to Federer but not so well against the likes of Blake and Berdych. Head-to-heads aren't particularly useful in saying who the better player is, but are a good indication of how players' games match up.