Prediction: Wii U will survive for five years off 3DS sales might, whether it sells gangbusters or not.

[skunkfish]

I just had the insane thought of sticking my Wii U in my laptop bag powered by a battery and playing games on the gamepad on the tube on the way to work... At 35W, a decent laptop battery could keep the Wii U powered for almost as long as the gamepad :)