Religion has nothing to do with this. The Bible, the Quran, most religious texts are more violent than these games.
Besides, I have AvP, the reasonably new one, in my account. I stab people, drown them in acid, shoot them, burn them, then tell them to "come on out motherfker" before tearing their spine out. That's more violent than any RO I've ever played. So no need to curse religion, since that has no relevance on anything. Instead, curse the devs who cut down games before they're even rated, thus giving uninformed reviewers the impression that the game _needs_ to be cut.