MH3U was just a Wii game upscaled, anyway. It looked bad, but the Wii U could do more than that graphically as well as 1080p.
Technically, its a *deep breath* port of a wii game to psp minus water areas plus a ton of G content, a port of the psp game to 3ds, with water areas added back in and more new content, and 3ds graphical improvements, and then a port of the 3ds game to wii u.
And that has been todays useless fact.