It was so so.
It looked mostly simplistic and unoriginal. At some places you started using sound effects and then you silenced them out.
Also you have the thing with the falling pole repeated 3 or 4 times!! cmon!
BUT- here what I liked-
I liked the Sonic part!! This was sort of qute! Except- you should of animated the MARIO BREAK UP parts rather then doing a cheap trick with scale. That looks crappy. Make the theme more specified (such as- Mario spuff, or sonic vs mario, or mario cartoon.) Your animation and sounds need alot of work. If you try harder you'll get there! ;) later.