The whole "bu .. bu ... Nintendo can't not give the Wii U it's own unique Zelda".
Sure they can.
Just like they can turn Metroid into a sci-fi soccer game.
Or they can give you an Amiibo Animal Crossing board game instead of Animal Crossing.
The Wii U is not going to get a proper Metroid or Animal Crossing game, and Nintendo will do as they damn well please with Zelda too, and there's not a single thing all the whining on the internet will do about it.
If they feel like it's a smart business move to dual-launch the next Zelda on both Wii U and NX ... that's exactly what they will do.