Aren't first party exclusives the real big reason people choose one console over the other?
Aren't more people going to want to play Titanfall than Knack and Killzone? Won't that possibly trump the hundred dollar price difference between the two consoles?
Plus there's the fact that more people prefer to play Call of Duty on Microsoft consoles which I imagine will carry over to the XBone.
I know that the narrative is that Sony won E3 but I wouldn't be surprised if Microsoft wins the launch, and this is coming from somebody who will probably buy a PS4 before the XBone.