straight up i'll be honest. In my experience, there isnt one class/race combo that excells at pvp, or pve for that matter. Race and class dont matter. Thats not to say some classes might be better suited for pvp played by a stock build idiot, but an informed, intellectual approach to pvp can be an above average player, regardless of class/race
My advice: Be what you want, and learn from your errors. Judging by WoW's success, this game will be around for at least five years, thats plenty of time to learn and succeed at a game.
Peace.
Roach - Bloodhoof Server