The biggest problem about fighting games, is that there isn’t even one simple fighting game working on blender, with the exception of “Alley Fighter”.
Besides the lack of examples, the collition of a fighting game is incredibly hard to achieve, thinking on an old arcade game like the legendary “Street Fighter 2”. To demonstrate it try to investigate a bit about the fighting game engine called M.U.G.E.N.
Now, let’s think we solved all I said before, there’s still the problem of the fighting style, as far as I know, there isn’t a game out there that has such a fine tuned fighting style incorporated nor players that can achieve it either.
In conclusion, a fighting game like the video isn’t possible even for pro companies, but a more old school 2D arcade fighter could be, my guess is that even something a little more sofisticated like some old 3D fighting games can be achieved but that would be all.