Thanks for the info. I have a Switch preordered and I'm probably going to hold off for now and go Wii U.
Here's the way I look at it.. If you have a Wii U and all you care about is Zelda, then the cost difference is pretty significant:
Playing BOW on Switch:
Console: $299.99
Game: $59.99
Pro Controller: $69.99
Features: 900p docked, play on the go, less compressed environmental sounds, *possibly faster load times, 30 fps with some dips, *possibly less pop in
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Total: $429.97
Playing BOW on Wii U:
Console: already own
Game: $59.99
Pro Controller: $14.92
Features: 720p, 30 fps with some dips, *possibly better dynamic lighting, bloom and contrast, originally built for hardware
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Total: $74.91
One of those offers the ability to play all future Switch games.