Saints Row 3 is.. Insanely bad. First of all, it has a carrot that you hit people with. More realistic than GTA SA, since GTA SA's carrot just looks like those little light-sticks with a arrow on top. Also, on Saints Row 3 I was watching a criken2 video (I think it was a Criken2 video) and they were on some man-pulled cart. And then more appear behind you and when you shoot at them they loving explode.
In GTA SA, the heads decapitate if you headshot somebody. Now, I would talk about Duke Nukem: Forever and how violent it is, that's a complete different story. Anyways, GTA IV has alot of language like "That whore never calls me" or "You CUNT!" and stuff like that. GTA: Vice City just has alot of love scenes. GTA III, I don't see much bad in that except when you shoot someone in the head blood spurts out the middle of their neck.