Definitely awesome for a first try. Since you want to know, here are the wrongs and rights I came up with.
Wrongs:
-Too choppy - Try increasing frame rate, and adding more frames.
-Too slow - making the animations move quicker increases tension and makes it feel more action-like.
-Scenery - The backgrounds are a little unscaled and doesn't blend with the characters. Try creating your own.
-Music - The music didn't really compliment the actual fight. Either that, or add in sound effects.
-----
Rights (in my own opinion)
-Art - I enjoyed the sprite theme. The effects you drew are good too.
-Concept - Although a little story/dialogue entry would have made it start with meaning, the idea is pretty good. It's common enough to be understood easily, yet very flexible because of fighting possibilities. Definitely excellent to start with, I think.

Hope this helps you out to make improvements :D
Looking forward to seeing new videos. Good luck!

Well first of since this is your first one you made ill give you the botd you made a good try but you have a long way to go the frame rate leaves much to be desired try to increase the speed a bit make it flowing and as for the music it didnt match the flash to much the music was way to epic for the battle you could have chosen a better one that matched it to a point still great job for your first one keep on trying

wish it had some of the audio from the show. maby drawing a shitty background would have been better. kinda reminded me of the republicans debating with each other

wooooow there's alot of stuff wrong with this, too much for me to write, just study other good sprite animations on newgrounds and you should see the difference, try super smash bros Z or Mk vs Sf 3 or any other you can think of and learn from them

Nice, but a LOT to improve, try making the action faster, it will look nice, and try to not use a photo as explosion, try a sprite os one. =P