Representation in ratings are important to players but we consider that one facet. We pay attention to what people are saying, and our own play experiences. We use all those to balance PvP classes. Rets and Discs are a good example - were very slightly nerfed (set bonus and silence). Those classes were doing too well and were reined in. Under performing specs include DPS shaman. Any changes we make have effect on the whole game. So many things to take into account. Decisions are made deliberately.