good for a beta
What a lot of people don't realize when posting the review is this is a beta, you say so yourself. As a beta, this is good. I didn't have any lag problems while playing. There is potential here. Once you work out specific move sets for each of the fighters I think it will be a good replayable game. I also like the "paint my fighter" to give some customization.
Don't let the nay sayers get you down and keep at it. I would love to see how this progresses.