Remember that Wii U supports a standard controller, and the Gamepad itself is a standard controller by all accounts (like a slightly wider Dreamcast controller, or an Xbox 360 controller with a screen at its center, which amounts to basically the same thing). There's no reason to believe the game will be controlled with the Wii Remote until we hear that from Nintendo or Platinum Games.
"Too often we enjoy the comfort of opinion without the discomfort of thought." - John F. Kennedy on reality
"What if everything you see is more than what you see--the person next to you is a warrior and the space that appears empty is a secret door to another world? What if something appears that shouldn't? You either dismiss it, or you accept that there is much more to the world than you think. Perhaps it really is a doorway, and if you choose to go inside, you'll find many unexpected things." - Shigeru Miyamoto on secret doors to another world