I dunno. I played R6:V before playing GoW, and I just couldn't get behind the cover mechanics of the former after getting used to those in the ladder. Maybe GoW2 will adopt a similar configuration as R6:V instead of its one-button-to-rule-them-all technique.
I mean, yeah, it simplified the gameplay, but it really made me have to think about what the button was going to do in the context of the area I was in before I tried to do what I wanted to do.