Sounds just like the Wii U pre-launch. Pre-launch hype isn't exclusive to the Xbox One, but this isn't my point.
The Wii U's userbase is probably more suited for a game like Kingdom Hearts. Because the casual dudebros on Xbox all want that Disney RPG.
Oh yeah, all XBox gamers are dudebros. Sony is also worse than the mafia.
I thought we were being serious here? As Gahars said, Kingdom Hearts used to be a PlayStation title - y'know, that platform on which GTA used to reign supreme until this generation came along? Yeah.
That, and the Wii U's launch hype pales in comparison to that stirred by the PS4/XBox One. Besides, the systems are structurally similar - they might as well release the game for both because it's not a big deal to develop for them simultaneously.