Exactly, Nadal, Djokovic, Murray and Federer have all had their moments. Nadal's time wasting can be appalling at times. Djokovic can be petulant. Unless Murray is winning easily he is always petulant. After the game he is gracious in defeat or in victory but his on court behaviour leaves a lot to be desired. That is the main reason people don't warm to him and why people prefer the grace and elegance (on court) of Federer.
As for the silly comment made by Leeds about Djokovic owning Federer, I can't say I agree (no surprise there!). Roger beat him at Wimbledon, and beat him comfortably in another tournament too recently (I forget which one) and Djokovic has had a couple of easy wins too. The rest of the times they have been incredibly evenly matched, with matches being decided by one or two points. In the final on Monday that match could have gone either way. At the US Open in 2011, Federer had match points and Djokovic hung on for dear life before eventually prevailing.
Maybe Leeds' main beef with Roger is that with the exception of the Olympic final, Roger has tinkled all over Leeds' little bitch Murray in the important matches.