Most Nintendo games don't let you have command of the camera. So 60fps is much easier to do. How many on that 60fps list is 1st or 3rd person behind type of games? None. Plenty of 60Hz games in parallex scrolling sideview days.
And by keeping it colorful and simpler art styles, you don't have to use heavy duty shaders and FXs.
This is how Nintendo is giving you 60fps on Wii U. Doesn't mean anything beyond that.
It means we are enjoying 60fps goodness...I don't care how they achieve it, if the game is eye candy AND fluid, they can employ whatever tricks they want.