Untitled Fighter Prototype "BB"/Martial Champion

So there's been this romset for MAME floating around called Untitled Fighter Prototype "BB" and I finally got around to figuring out what it is. The game runs in MAME but only barely, according to MAME devs it runs the same way on MAME as it did in actual hardware when it came to them. Here's some shots of the game running in action on MAME.

Avu is the only character with working (barley) portrait art , and his sprites show up when the "match" starts, unlike most
of the other characters .

Avu and another guy.

Avu and some crazy looking chick.

Anyway thats the game in action. Anyway take a look at the screenshot from the final version of Konami's Martial Champion.

The portraits are quite similar and the font for the word Avu is pretty much exactly the same. Also if you take a look at the unamed blonde guy in the 2nd "BB" screenshot he uses the exact same stance as Jin in the final. My guess is that BB is some kind of corrupted prototype romset for Martial Champion. The sprites of the 2 non Avu characters that load in the prototype are not found in the final game so its quite interesting to see how the game changed.

Compare Jin in this shot ( on the left) to the unamed guy in the proto. Thanks to friend and Unseen 64 poster Sabin for noticing this and posting this shot.
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