The reason why a game from Capcom would only release on PS4 even if it is really a game for the western market so that they would lose many sales with an exclusive release would be probably the same reason as with most other exclusive games like Sunset Overdrive, the console manufacturer pays for it or helps to develop it.
It would be pretty stupid if a developer would really develop a game only on PS4 or XBO "just for fun" when both consoles are so similar to each other so that development for both isn't much more work as for only one console.








