Hmm...
Some of the animations are skippy and the stages aren't replicas of SSBM. However, you did a decent job of transitioning the feeling of SSBM to Flash. The sounds are very nicely ripped. The menu is very professional. The sprites are sized a little weirdly, but you don't notice it in the heat of battle. Falling off a stage is a little weird. Overall, this is a very decent Flash game. It's a lot of fun.