6-1 6-3 6-0. You'll never see Djokovic get beat down like that. lol Djokovic was definitely the second best claycourter last year.
If that is your sole argument then you fail miserably. A number of things:
1. Tennis is all about matchups. Nadal is simply a bad matchup for Federer, moreso than he is for Djokovic and many others. Heck Blake has a better record vs Nadal than Federer, I guess Blake is a much better hard court player than Federer by your logic.
2. Federer was in absolutely horrible form at last years French Open, probably the worst tennis he ever played on clay despite scraping past an easy draw to the final. Even struggling hard to beat a clown semifinalist like Monfils.
3. That match was the 10th time Federer and Nadal have met on clay. Nadal had never come anywhere close to beating Federer that badly until that 10th match on the surface. If Djokovic and Nadal play 10 times on clay Nadal will probably smack Djokovic down that badly on clay atleast once. Federer has taken atleast 1 set off of Nadal in 7 of their 10 matches on clay, beaten him once and had a match point another time. Djokovic has managed this vs Nadal in only 1 of their 5 matches on clay, never coming close to winning.
I dislike both Federer and Djokovic so it is easy for me to be objective comparing the two, which cant be said for you as you basically admitted Djokovic is your 2nd favorite player and your Roger hate borders on obsessive. Djokovic has no claim to having ever being the 2nd best player on clay up to now. He has never beaten Federer on clay and last year in their only match on clay Djokovic was getting his butt whooped so quit like he always does when the going gets tough. When he does something that gives him any valid argument for being the 2nd best on clay, and that has to be alot more than giving Nadal one closer match than Federer then you will have a point.
Djokovic has gone 0-2 vs David Ferrer on clay since his prime began in the spring of 2007. In fact he went 0-5 in sets vs Ferrer in those two matches. Do you think David Ferrer would ever straight set Federer in a best 3-of-5 set match on clay the way he apparently can do to Djokovic, ROTFL!