In my Honest opinion, hand´s ability its the 1º variable, But i do agree that some class´s will ultimatly have some edge over others, for instance, with my (demon.. spec Loc) i get ganked by hunters 7 out of 10 times, (BTW for those who say that a warrior owns, for me its the easiest class to beat)i had some troubles with rogues in lower lvl´s, stoped at about lvl 40 till 68, got harder again to beat them after 68, ultimatly at 70 i got ganked by almoust everyone till i geared up properly.

I´ve lost fight´s with every class´s in the game, and i won with every one of them, (still find very hard to beat a hunter). But well, am just a Noob ;), still trying other class´s as we speak.