screens are going to be bigger and bigger because people want to have a greater cinema feeling. i don't think apple will kill consoles because of an phone or tablet...
maybe apple could kill handhelds with that (i don't believe this but more than normal consoles) but i don't believe people who love to play on a big screen playing core games or casula games where you have to move in your room want stop it because of small screens and without kinect or something like that.
Edit: ohh ok the thread is 3 days old and i'm a little bit late, no clue what the discussion was here haha