Best: Shazam - A lot happens in a short time frame, so you're not sitting there watching for too long, and I love how he catches the opponent after the first "spike", just to spike them again.
Worst: Green Lantern - It's too goofy. It would have been enough to just have a combo of constructs, but the constructs are way over-the-top cartoonish. And I don't know if Hal transports them somewhere somehow, or if he just makes a construct big enough to encompass the whole arena, but the whole Lantern Platform is corny as hell. It would have been better to just have it in the Stage itself.