Lol. We don't know if Zelda will launch on NX. You just make rumors to facts. Get your facts right!
And a PS4 in 2016 while the PS4k with more powerful hardware launches the same year? Lol.
NX is 2017. Nintendo wants to satisfy Wii U owners and launch the NX successful. That are their two goals and both can only be achieved with a 2017 or later launch.
Lol, my facts (or, more correctly SuperMetalDave's ones) are verified and confirmed themselves true since they appeared on the internet BEFORE the Direct Leak even happened, if you want to read it again here you have for the 10000th time the link https://www.neogaf.com/forum/showthread.php?t=1188554
Wii U owners are already satisfied if they were looking for Nintendo games, the console has plenty of titles to play, now it's time to think business. if those 13M people don't want NX that's absolutely fine, there are still more than 7 bilion people in the world.