If I had a GTX 650 or higher in my PC, I wouldn't be downgrading my experience just to play on a portable handheld, I'd rather use my full screen monitor at 1080 rather than a 5 inch 720 screen. Hope they price this very competitively, if not the 3DS and VIta will own it.
I played Skyrim on it and it looked damn good on that screen. What would make this thing BOMB the competition is if they used GRID for graphics and cut out your computer completely. Or, let you use your computer for other applications while you were playing games. If my wife wants to use the PC I could still game on the Shield.