This is not a fair compairison to make as the N64's lifetime is over, and so we know about all of the great exclusives that it has, the Xbox One on the other hand is still very early in it's lifecycle, and so we don't really know just how good of a console it will be as the majority of it's exclusives are still on the way.
Choosing right now I would say the N64 is a easy choice because of it's library of games
-Mario 64
-LoZ: Ocarena of Time
-Loz: Majora's Mask
-Super Smash Bros
-Golden Eye
-Perfect Dark
-Mario Kart 64
-Diddy Kong Racing
-Banjo Kazooie
-Banjo Tooie
-Wave Racer
-Donkey Kong 64
All of these are excelent games, with a few of them being some of the highest rated games ever made. Curently the PS4 and X1 pale in compairison, but in time we will know who the real winner is.
