My theory on the wiis power.

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^ The problem is we don't have the all of the wii specs. Read my post again and you would know why specs aren't the only think that contribute to graphics.
@HappySquirel Yep as long as the graphics are 3d and there isn't too many jaggys the art is what matters. The power also contributes to physics and Ai though which could effect gameplay so that is why power is important.