Expecting a large hardware boost from a 10 year old GameCube game that isn't even one of the better selling Zelda games is a bit much IMO.
DKC: TF will outsell it easily. Zelda fans make a big fuss on the internet, but DKC is easier to play for most people IMO and thus has wider appeal.
I think Wii Fit U will fizzle. Wii Party U might do OK though, it seems to actually use the game pad fairly well.