It's a little soon. Nadal still has the YEC left, and what one more Masters tourney right? For me, winning the FO, W, and US Open is a huge factor. In my opinion, you have to take these poll results with a huge grain of salt though, if you asked who has the best two handed BH in history, Federer may very well win that internet poll (I'm being facetious, but you get my drift..) Also, as the years pass, the majors tend to be focused more than just about anything else, and all the other tourneys are really seen as "tiebreakers" once you compare the records at the majors. That's just what I've seen happen in other rivalries, but when things get close, basically everything gets put on the table. What about the strength of the prime rivals? That's another thing to consider. In 2006, Nadal was still 20, whereas Federer won the AO in 2010 and was 29, so it could be argued that Nadal had a tougher primary rival. Then, what about say the top 10 in 2006 vs. the top 10 in 2010? That could be considered too.