http://www.videogamer.com/news/unreal_engine_4_games_could_be...
Epic Games doesn't intend "to bring Unreal Engine 4 to Wii U," the firm's vice-president Mark Rein has stated, but the engine could run on Nintendo's upcoming console "if a customer decides they want to port an Unreal Engine 4 game" to the hardware.
So unreal engine games could work on Wii U at a base level but probably wont meaning a repeat of the wii.