Absolutely nothing. Read my post again. I said you are free to dislike anyone you desire, but give credit where credit is due, which JCK clearly fails to do by attempting to find excuses for Federer's wins, or claiming that they were easy, because in his mind, he didn't have proper competition.
Nadal is a rival, but recently Murray and Djokovic have elevated their games. 2-3 years ago Hewitt and Roddick were not the pushovers they are today (although Roddick is getting his game back, and adding elements to it) and Safin was a force to be reckoned with. Federer has had to grind out results, and he hasn't always been at his best; the man is a true genius and legend of the game whether you or JCK like him or not. Your opinions are just opinions, but give the man credit where credit is due; you manage to do that Andy, others have a harder time doing so.
Let me ask you this. Jordan, Woods, and Rossi are all legends in their respective sports, regardless of whether you like them or not, right?