Each input that goes in during a grab animation will add a frame or so to your breaking of the grab. Each 1/8th (?) of a turn of the control stick adds to the pot. Each button press adds to the pot. The c-stick does the same thing, but the only way that works is if you hit a direction, return to the middle, and then go to another direction. So, what I do:
Spin the control stick like mad
Mash Z, R, and L with my middle and index fingers
Thumb rolls wildly over all of the face buttons
Ignore the C-stick and D-pad
Yeah.
And the era of discovering playstyle-changing techniques died a couple of years ago. No character's really found something that's totally changed their game (except Metaknight with planking, and that was known about back in the Melee days. It just didn't become popular until Brawl matured a little bit). Correct me if I'm wrong. I've gotten over the fact that Snake doesn't have many ATs. Not many characters have discoveries anymore...