Too slow
Couple of Things I noticed:
The Animation goes by incredibly slowly, it bores you to try and watch
The Music Cuts out before the Flash is done
There is no real coordination between the fighters, Example: One of them jumps over to just land next to the other one where hes already laying? It makes no sense, he could have taken 2 steps over to him instead, if he was going to jump it would have been for another attack like to kick him in the head or something. Your backround was very well done but the animation itself lacked alot, sorry T_T.