Simply put, if you want to play Fighting games with and against pros/tournament goers PS4. If you want single player exclusives, PS4.
If you play mostly 3rd party games and want the best (console) version, Xbox.
This one is my opinion, but if you want “better” online, better interface, with a company who constantly improves and updates their system, Xbox.
Plus, CrossPlay, back compatibility, Play anywhere, Game pass, and ea access.
But really I feel like you should have both, and a switch, and maybe a PC, but that’s just the gamer in me that likes to play everything. I don’t want to miss out on games because I don’t have the hardware, or wanna be a “fanboy” to some company that just wants my $.