A while back I interviewed Yuzo Koshiro who revealed some new info on the development of this legendary brawler. In this episode: How the small studio Ancient was tasked with making the best fighter on the system. Also covered, the music of Streets of Rage 2 and the audio hardware inside the Mega-Drive.
I got to watch it when I get a chance. I'm assuming it's better than when Next Generation magazine used to do this stuff. (Even back then it was kind of obvious that no Overworks didn't do everything good at Sega at the time.)