"It will become important for us to accurately take advantage of what we have done with the Wii U architecture. It of course does not mean that we are going to use exactly the same architecture as Wii U, but we are going to create a system that can absorb the Wii U architecture adequately".

Zelda U is probably not only biggest Zelda game till date, but biggest and most expensive Nintendo game ever, so they will certainly port game to NX and not just leving it on user base of 10-15m. Remember, they already wanted to release game this year, but I think one of reasons why Zelda U is delayed is launch of Wii U and NX version in same time, they probably working on both versions in same time. Of Course it will cost money, time and manpower, but Zelda U port NX will easily sell at least 3m on NX alone, but what's more important (especially after Wii U disaster), Nintendo will have very strong game for launch of new platform. TP was such strong launch game for Wii and they will do same with NX.

Nintendo almost always is making profit from own games even if game is sold bad. If Zelda U stays Wii U exclusive (which I doubt), game will sell at least 3m with price of $60. I think they will made profit with only around 1-1.5m sold games.

Even TP HD will probably be around 2m. :)

I know that Nintendo usually makes profit out of every game they make (I'm sure they even profited from STEAM), but Zelda U, alongside Xenoblade X, are probably the two biggest and most expensive projects Nintendo has ever made, I think they'll need more than 1.5m on each to make it at least worth the efford. I think both games will be avalible on the NX somehow, port or BC, so in the end it doesn't matter that much.

You know that Zelda U art style has phenomenal reception, right!?

Ocarina Of Time didn't sell 7+m because of art style, it sold so much because it not only best Zelda game but one of the best games ever. Majoras Mask had same art style even looked darker than OOT and it was sold twice less than OOT and less than WW GC.

TP Wii was sold so much mostly beacuse was launch title on best selling Nintendo home console ever (101.5m), not becuse of art style.

Do you realise that TP GC was sold more than 3x time less than WW GC!?

Zelda U on Wii U will sell at least 2-3m, on NX at least 3-4m, so I think that Zelda U will be around 7m LT game. Depends of NX, but 8m+ LT is definitely possible.

2 actually. OOT, and OOT3D sold over 8 mil, and Twilight Princess for game cube and wii did as well. With OOT Being the best selling of the series.

As it's a Wii U exclusive I expect 4 million units on Wii U.

Random thought on this, I don't mean to enter this discussion, but still;

One might say that with the old games it was the other way around. Puzzles were more difficult to program than combat. There would have been no way for the NES to have a dungeon with changing water levels for example. Besides, the NES original still had light puzzles; block puzzles, The Lost Woods, puzzles hiding entrances to dungeons, and whatever else. A Link to the Past already had more elaborate puzzle solving, Link's Awakening even already had more elaborate puzzle solving, so it wasn't like this wasn't a thing in the series already. Maybe the N64 just finally gave them enough power to give the balance they wanted.

I thought OP was talking about Twilight Princess HD lol

but I can see Zelda U reaching 2M on WiiU, not TP.