If Nintendo had to, which one?

[Soundwave]

I wouldn't mind either, but I think Sony would provide less interference. But on the flipside it would probably lead to a monopoly on the game industry because I don't see how Microsoft would be able to stay relevant if they're struggling against Sony as is. Give the Playstation brand Mario, Zelda, Pokemon, Splatoon, Smash Brothers, Mario Kart, Fire Emblem, Metroid, etc. on top of all the third party support they already have plus Uncharted, Last of Us, God Of War, etc. and it would pretty much render XBox moot. It would also effectively make franchises like Dragon Quest, Monster Hunter, and Yo-Kai Watch exclusive.