I could be wrong, but it seems the grab animation of his tornado DM can be crouched under by some characters. I was playing against the CPU Robert, and the move whiffed 3 times because he crouched in the last moment.
Oh, and his

+P builds stock at a ridiculous pace.
Autocombo DM combos off light attacks, while only A button for his SDM combos, and only from a single hard attack.

+A/B/C/D still stops DM fireballs, though I haven't tried it against a charged Kaiser Wave. It loses to Orochi's

+A though.