Anyone even Wii U owners should be happy to see Zelda U on both the Wii U and the NX, Why would anyone want such a high budget game to get 1-2 years worth of sales on the current hardware that have a small userbase ( yes it will sell good on that userbase as its the hardcore Zelda fans) when the NX could potential keep regular sales going for 5+ years.
Just look at the legs of Twilight Princess on Wii - It's still selling now and its been a Generation and half.
Year Yearly Change Total
2006 1,810,937 N/A 1,810,937
2007 2,302,768 27.2% 4,113,705
2008 1,007,161 -56.3% 5,120,866
2009 351,404 -65.1% 5,472,270
2010 356,547 1.5% 5,828,817
2011 504,067 41.4% 6,332,884
2012 362,223 -28.1% 6,695,107
2013 212,800 -41.3% 6,907,907
2014 148,473 -30.2% 7,056,380
2015 192,847 29.9% 7,249,227
"If" the NX is a combined platform your also bringing in a big fan base from the handheld side that would probably add a few million sales to it just there along with console gamers potentially picking up a Nintendo console since there last N64 or Gamecube purchase and even people picking up a Nintendo console for the first time.
I don't actually think it will be a NX launch title but a first year release which would still give Wii U owners like 6 months earlier to play it and hey even double dip a year after when they get a NX and fancy another Zelda fix.
