It is not a matter of cartoon-style or not. The colors are 100% required! And the mascot is already ready and you created some entirely different mascots. That's the main reason why I cannot accept it. I like your art but it has nothing to do with 1UP. :)
It must look like this:
But you have already earned 3 times more with this than all other contributors will so I guess no harm done.
No problem. Just for non native English speaking maybe next contest rules should be explained a bit more clearly.