There are factors, there will be other things that also get a lot of hype. Like Playstation VR might be a huge deal and people will all want to play VR, the NX proberbly doesn't support this!
4K is something, people might buy new TV's especially with the price coming down, the Playstation Neo and Xbox one S that have support for this in ways, might get a purchase over a handheld that doesn't compliment the TV.
There are a lot of factors, Nintendo needs to put out something that doesn't need a lot of time to catch hype, people will see it, talk about it and want it! Zelda will be a big deal, its done well in preview events and already has a bit of hype, people will want to play that and will get a NX over a WII-U if its available, most likely.
I think 1) Availability (it shouldn't be sold out like the wii/wii-u) will be a big deal and also, just what it does.
It can be enough time, but if the rumours are true about the handheld, I think it would still have been better to take MORE time.

Twitter @CyberMalistix







