usually at high rating it goes more fotm, but SL pvp is healthiest I ever saw in wow history and actually has every class (not every spec, but almost all classes, i think only DH i don't see in tournament)
But his word is 100% accurate in WoD, the worst pvp era ever in wow history, pure humans + dwarf shaman or nelf druid
So unless u talk about SL specifically, in general his word is true, pvp is first gear than ur class/spec is fotm, in Cata for example frost mage was pvr : player vs raid (of non mages of course), then druid cat, then warrior arms, the hierarchy was clear as sun and forget beating even half decent mage 1v1 no matter who u are
Does skill matter in pvp? Right now seems finally and actually and really yes, the first exp where it seems skill is most important, was it always? Egypt no (because egypt is currently worse than hell), just 3 exp ago it was gear then class then way down skill, with classes like paladin and priest non existing in any spec