I'm writing this not knowing the actual performance of Tegra x1 in this regard but on surface examination it looks like 4 64bit arm cores and 4 32bit arm cores. Typical for a high end android phone. Like the wii u this looks like another cpu light design that is far less competitive in cpu performance in comparison with its gpu performance so again its not competitive with current ps4 or xbone let alone the newer models coming.
Surely we should remove all references to home consoles and just see this as a portable system with a hdmi connector to a tv. Even wii u has larger optical discs and more storage potential with a usb 2.0 hard drive connected.
Any ps4 or xbone ports it gets will be severely cut down and a non event to most gamers who want the best versions of games.
The NX will get;
Nintendo's own brilliant titles
Portable games from the publishers who supported 3DS
Enhanced versions of android or other arm based games
A few horrible versions of PS4, PC or Xbone titles that people will reject commercially for obvious reasons before the publisher concerned wise's up
