It has mainly benefited Nadal I think. Federer has always had the game to play on fast courts. He abandoned serve and volley when he realised it was getting him nowhere due to the changing courts. Wimbledon has become a joke. If you serve and volley at SW19 you will get slaughtered for sure unless you have a Karlovic serve.
Damn rights. If the courts went back the way they're supposed to play, Rafa would've won only French Open titles. I think it's a black mark in our game if a monkey like him can win Wimbledon against Roger and also, Rafa actually believe he's so good that he is fuckin delusional, look in the mirror you monkey, the courts helped you cuz without it, you're just another claycourt one surface wonder.