There's no way you're going to be punishing a lp sonic boom from Guile with that Ultra unless you predict it in something like the first 10 frames. It'll be good for the other versions I guess, but that matchup ain't gonna change much.
Bison still rapes shotos for the most part anyway though. Goes even with Sagat and Dhalsim?
It was an EX Boom. I was doing the motion anyways and saw him reach his arms back / shimmer. All I needed to do was push the button.
It could've been a feint and I would never say I wasn't reacting to the way his character moved and not the BOOM, but I did. Even saved the replay because it was entertaining .
To your point, though, I'd usually fail when I tried that. The fact that it worked was a "WOO!" moment.
I have no idea what Bison's matchups are considered these days. I'm sure Cammy beats him pretty handily, but dunno what else.
Match ups aside, he always struck me as a character who won because his opponent made mistakes.