Oh fuck off. Anyone could make a beat 'em up better than anything Sega ever thought about. The only reason there aren't a lot of western beat 'em ups is because the genre was basically dead by the mid 90s and everyone had moved on. I find the whole notion of Japan being on some other plane of existence insulting, really. Contemporary Japanese games are trash compared to western games. They basically never adapted to the internet age (they still couldn't make an MMO or online FPS to save their lives). They're technically backward and primitive, too.
Sega has to be the most overrated producer of beat 'em ups in the history of gaming. Their beat 'em ups were always second rate trash compared to anything Capcom did.