Just because it's now multiplatform, doesn't mean things will change when it comes to development.
Fighting games in general, have never been really popular on Xbox platforms (except for some Capcom fighters being Ultra Street Fighter IV & Ultimate Marvel Vs. Capcom 3 due to them being technically better on 360 than on PS3), let alone on PC gaming (especially when PC gaming isn't popular in Japan). They're going to most likely develop this with PS4 hardware in mind, because Playstation consoles are where most of the fighting game community are at in general, besides Arcades in Japan.