I don't get it... "there was some originality" but the point of the Flash was missed completely due to the originality [in a way]. It was suppose to be a Flash that resembles Street Fighter IV, but all it had was Street Fighter III sprites with rather poor modifications and an altered move-set. I think a more appropriate title would of been "My Ryu vs Ken." If it were titled just about anything BUT what you chose I would give it a lighter judging but since the title gives the expectation that it is something it really isn't I must give you a lower rating for it.
But, it was a decent animation, with a somewhat original fight dispite a lack of reason. I just think you should stray away from mixing your hand drawn art with the sprites and it will look a bit better, anything else would just be skill.
For the record, see "Proxicide" before you use the term "graphic intensive." ;)
After all that, good luck on future animations and I expect great things from you.