For owning all the systems and playing games on both I can say:
The Games Look The same For Both Systems.
360 games play better / have less issues.
PS4 Preordered - 06/11/2013 @09:30am
XBox One Preordered - 06/19/2013 @07:57pm
"I don't trust #XboxOne & #Kinect 2.0, it's always connected" as you tweet from your smartphone - irony 0_o