The only 3rd party Japanese franchises I'd call relevant in the West are...
Dark Souls
Resident Evil
Final Fantasy (mainline only)
Kingdom Hearts (mainline only)
Street Fighter
Tekken (I think?)
Dragon Ball Z
Metal Gear
Maybe Naruto
Umm, that's probably about it.
Hmm okay let's see
-Dark Souls: Bloodborne a spiritual successor to the dark souls series was exclusive to PS4 and proceeded to outsell both previous entries on consoles.
- Resident Evil: the next entry has yet to be announced
-Final Fantasy: somehow the single biggest success in the series gets a remake that is exclusive to PS4 and that doesn't matter because reasons.
-Kingdom Hearts: there are no previous KH games available on the Xbox platform and a rerelease of previous titles are releasing exclusive to PS4.
-Street Fighter: Perhaps you've been living under a rock for the past year but in case you didn't know SFV is exclusive to PS4
-Tekken: Currently there has been no word whatsoever of Tekken 7 releasing in anything except PS4 and maybe PC. All indications are it will not be coming to XB1.
- Dragonball Z: LOL at you thinking this is relevant but Dragon Quest, Star Ocean, and so many others aren't.
-Metal Gear: the last titles did release on XB1 but the software split was staggeringly large. So even your "relevant" games are selling a pittance in the XB1
- Naruto: both this and Dragonball sales are a fraction of the sales of the other franchises I've mentioned but somehow these are more "relevant." Mmk then
Yea that list isn't exactly making the point you want it to. Your mental gymnastics are staggering to watch.