Cleave fights are still not that common, but Blade Flurry it's a problem for the rogue class, as it makes Combat mandatory for certain fights (Like Guardians now in MSV). But the point was that you said that it was "top mult" when it's not true. Anyways, this is a PVP thread.
If you think rogues are only "2 buttons" or "3-4", then obviously you haven't played one. But then you say you were talking about PVE, when this is a thread called "So the Arena Ladder got updated" so...yeah, many classes can survive in PVE with few buttons. That's not a good thing sadly.Which "Pinnacle", mut was 2 buttons, combat was 3-4, Subt was the only one that did anything really and that was not much harder (cooldowns don't count, everyone has cooldown management it isn't unique to rogues so no, core rotation only). This is of course from a PvE perspective. Rogue's where one step below the idiot proof that was Warlock raiding in BC.
Representation =/= balance why people continually try to make then equal is beyond me. Because you are underrepresented does not mean you are bad.
While they are not equal, they are a good measuring way. Team composition, synergies, class population (rogue and monk are the least played class at 90 as well), etc. also affect those numbers, but when you have certain classes being so rare at the top, there's something wrong. Note : I bolded 'classes' because people will bring 'enhancement shamans', 'guardian druids' or things like that. Those are specs.
If a class that has always been solid in PVE and PVP is the least played at 90 (on par with monks) and almost the least represented at the top in arenas, it means that something is wrong. And telling players that the class is "the best designed one" while giving other classes/specs a much better resource system must have something to do with it.