I didn't say warrior because it beats almost everyone but you can win against him with feral and fmage at least that is what i think(and everyone knows that you can't win against war with lock). And can wars bug abuse?
I think that there shouldn't be reward for 1v1 and you can't compare duels with 1v1 arenas. Because ferals, mages and other classes have no chance against warrior in open space with no place to kite.