I am not that sure about graphics. I have seen both of them (and I am currently playing the 3ds version of the game) and to me there is no difference in graphics. This may be drawn to confusion because of the big screen you have while playing the game on your wii u, but I insist the graphics are the same. the difference is the online feature that the wii u version has and the 3ds one doesn't. If you play the game without the 3ds circle pad pro there is a huge difference than playing it on the wii u, because the pad gives it easier control of the camera.