Is that Ryu from Fighting Street? It's been forever since I played it, but could that be part of the ending sequence?
It is. That is Ryu. Be sure to note who
isn't in the picture as well. These are the most important clues.
Clearly, the answer is not "Street Fighter" or "Fighting Street"...
HINT#9 & #10: The mystery game is in the same genre... crap, that gave it away.