Can you link me to that thread?
Heres a quick look at the first Zela game to arrive on the respective platforms and their estimated userbase at launch+12months which followed. Something I think is more useful then just looking at the systems lifetime sales, since Zelda (like most games) is frontloaded and sells well over 50% of its lifetime total in its first 12months on the market.
Gamecube- (10m-15m) Zelda Wind Waker - 4.6m
Just to point out how much more balanced things are compared to comparing Gamecube22m, versus N64's 34m and Wii's 100m. Zelda Wii U will likely launch on a userbase of 14-17m, quite similar to the other first releases. If it was on PS4/X1, it would launch on a userbase of 65m-85m.
I ignored handheld because OP didn't speak about handhelds. Nintendo could produce a handheld and still go third party for home consoles.
Yeah, sure thing.
That's a huge franchise. I don't care for it, but man that is amazing. I know that comparing numbers may seem unfair due to time gaps but it is what it is. No use in getting up in a wad about it. I honestly don't like the series at all but this is a milestone in our current era.
You also bring up a great point about handhelds. But I don't see how a 3rd party company would support a different 1st party system along with their own and provide software. It seems doable but confusing and a potential disaster.