Elizabeth has a mom? i remember Elizabeth asking "is there a woman in your life, Mr Dewitt?" and Booker talking about how she died giving birth to his daughter, wich he also doesn't have . Is there any more info about Anna Dewitt's (ELizabeth) mother?

Also, is Elizabeth incredibly powerful because she exists in two worlds at the same time? (pinky in one world, rest of body in the other). 

I do prefer Saints Row 2. Better soundtrack, can costumize character, and more hardcore stories (good acting too!). GTAIV es better in graphics, though.