Yeah, it only works on certain characters. Dhalsim, Fei Long, Sagat, Zangief, T.Hawk… basically, fat characters.
Otherwise, you have to use Crouch Strong, Low Forward on everyone else like Shotos and Chun and such. I don’t have an exact list of who it works on and who it doesn’t, but when I play, I usually only go for it against:
Guile, Sagat, Dhalsim, Fei Long
It works against these people, but if you are trying to Meaty them, you should probably reconsider:
Honda, Zangief, T.Hawk
I know it doesn’t work on:
Ryu, Ken, Chun Li, Dee Jay, Vega, Akuma
And I can’t remember if it works on these guys or not:
Blanka, Cammy, Balrog, Bison
I’m pretty sure it works on Blanka, but he’s another one that’s really hard to actually land Meaty Attacks on for some reason. I never play Cammy mirror matches (outside of the one time we played online, Syxx), but I’m guessing it works on her, since Cammy is always wider than she actually should be, but I’m not 100%. Balrog is a character I rarely do meaties against, because his Reversal is so damn safe and powerful. And Bison, I actually don’t think it works, but I almost always go for Meaty Jump Attacks vs. him anyhow, since he can’t do anything about those.
P.S. How did you do at the tourney, Syxx?