Since they are complaining about Sorcs specifically, yeah it kind of does. If Sages and Sorcs were truly mirrors, then we turned all the Sorc players into Sages, everyone would complain about Sages instead.
Someone plays a Warzone. 5 of them are Sorcs. You get killed 5 times by the other classes, 10 times by Sorcs. Guess who's OP? No one, there are just more Sorcs gunning for a kill.