"You heard the stupid gaffe yesterday about the Wii U. If someone wants to take Unreal Engine 4 and ship a game on Wii U, they can! If they wanna ship an Unreal Engine 4 game on Xbox 360, they could make it happen." - Mark Rein
So there you go. This is just what I said earlier on the site as well as the podcast. Unreal Engine 4 can be scaled for Wii U. It's just that Epic isn't the one that's going to do it. I'm looking at you, Ubisoft!