What about the joy of watching your kid play something, and help them with it?
Lou said he was almost moved to tears watching his kid play Super Mario World, and I'm VERY happy for him. I can't imagine Lou thinking "Mannnnnnnnnnnnnnnnnnnnnnnnnnn, I wish I was playing right now!!"
Clearly by having two versions, he can set them up on two adjacent TV's and play them simultaneously.
With some insane controller coordination, correct body placement and the effort required to maintain a state of perpetual cross-eyed-ness, Grant replicates the capabilities of the 3DS and immerses himself in a fully 3D Hyrule that Carlos can only dream of.
You go with what you want - But I for one don't think the Wii U version should be knocked as much as it is by some - it's technically inferior, yes, but I don't believe it plays any less well than the switch. Unless you clearly want to play this game on the go and not on the big screen. For me, this game demands the big screen. Paying over $20 for this game for me at the present moment, trumps shelling out over $550 CDN (inc tax) for a new system and the same game. I hope you play this game soon - whatever version you settle for.