Not even close to every class got more than 8%. The ones that did either actually needed them because they were horribly underperforming (take your pick of the bottom third specs) or they changed/removed skills completely and had to buff to compensate (STM for Spriests, Might from Ret Paladins, etc). The fact that monk DPS wasn't near as inflated by legendaries as some other classes (hi arms warriors and fire mages) monks I would bet will be in the top half of specs and likely in the top quarter or third id guess.