User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-4563270-20121025205423/@comment-28303251-20121028225157

Most likely, Dex. Since some of the Wii U games use Wiimotes (like Rayman Legends), I think one of the Capcom employees over at Unity confirmed you can use the Classic Controllers from the Wii for the Wii U on Ultimate.