I'm more certain now that were looking at the artstyle of Zelda u. Why wouldn't they coordinate the wii u smash bros with the wii u games?
I don't think Super Smash Bros. Melee's Link look like Toon Link, from Wind Waker, or the one from Twilight Princess.
They don't need to. They probably don't feel like it, or are just lazy to do the same character.