Seems like he's getting some competitive hype, and rightly so. I'd read around the topics here for more specifics, but it basically boils down to the fact that almost every move of his has some use, he's heavy, does well mid-range, has a mean aerial and decent ground game, and is unpredictable. Or, really, should be.
Basically, have fun with the character, psyche your opponents out, get a few licks in, and you should do pretty well.
The dtilt is so fun. The usefulness of the attack is only half the fun. Being licked to your doom must be humiliating.