I think everyone is being a bit too fearful of Capcom and a cease and desist. They haven't stopped the progress of Resident Evil 1.5 restoration and fans have been working on that since 2012ish so I really don't think a home brew street fighter port on a failed widely poorly received console from 20 years ago is something they would worry about.
Even if they did there's not much info about this game out there and whoever made this seems to have went through great lengths to burry the street fighter association going as far as changing the name to hyper fighting, and keep themselves hidden. Watching youtube videos on this game gives mixed information. some people are talking like this was some kind of limited test run while others speak like the game was just a regular release.
There's no consistency and everyone is so fearful of possible legal action from Capcom it seems the story is going to stay that way even on this forum.
It's like something from The X-files. A "deny everything" type conspiracy. Too bad I don't have The Lone Gunmen to help decode this conspiracy