I don't think it's QQing when those things stop a game from selling or being fun. God forbid the reviewers down rate the game and affect the Meta score(and thus his bonus). They learned a LONG time ago when they made the first FPS games what's expected... too bad they forgot most of it.
I'm pretty sure the entire engines was rewritten for BO. I remember reading about how they had to make their own because the other COD studios wouldn't share. Yet they were expected to keep the same "look/style".
Munching On: Archeage, SAO Vita, Tales of Xallia 1/2.