i will be 100% honest with you.
in the beginning, i thought ''oh my god, not another super-mario+sonic crossover, filled with the adventures of super-sonic-mario man! WTF?!''
but i was pleasantly surprised when i saw that your sonic-mario movie was actually nicely animated, the sprites were used in a correct way, and the story/action that was going on was actually pretty good and funny!
(i liked the duel between super-sonic-mario and the wasp-thingy, it was pretty funny.)
also, the part where sonic froze instead of falling from the game-stage like mario did was quite original, in terms of the ''character taking damage''-way.... p)
oh, and i liked that instead of goompas, that you have added the blue-jelly monsters as super-sonic's enemies.
last but not least, having the mario-hat attached in sonic's head while his character was running/jumping/attacking/dodging, was a really difficult task, so i will give you good points for that as well! :D
(also, the hat was animated in such a way, that, when sonic was falling, he would lose his hat after an attack, or, the hat would move slightly when he would jump/run/dodge something too fast.
that was also a nice detail, with a hint of physics added into a sprite movie.
thats good.)
overall, it was a good movie.
however, in your next movies, try to include original characters as well, and always maintain your good sense of humour in your movies.
funny scenes and humour are the best elements in a movie, imho.
good work.