Nintendo talked about OS and API. Never exactly said that home console and handheld get the same hardware. Nor did they say it wasn't unified hardware.
x86 and ARM is something we see with Android, MS' UWP...
And we could see something similar with Nintendo.
Right now 3DS and Wii U OS look familiar because of the GUI but they aren't. API's are totally different as well. So devs have to do something like a port from scratch.







