I think you mean 1,2,B1 but yeah. He was referring to her specials, but it's the Sheeva thread so we can talk about everything.
1,2,B1 is huge, esp for a punish or in the corner. There's a bunch of combos not listed in this thread as well as unmentioned. One of the combos should be like this in the corner (original post doesn't include F1 after 2,1,2 which is one of Sheeves BnBs. That being 2,1,2,F1, (Ex)GnP where F1 after 2,1,2 is also a launcher mid screen)
1,2,B1, 1,2,B1, 2,1,2,F1, Ex Grab N Punch for a nice corner 16 hitter
Her ground stomp is definitely not useless but it can be at times. You have to be smart with it. Use it mostly to get them while they're standing up after Ex Grab N Punch or after you hit a standing 4. Standing 4 stuns them so you can either Ground Stomp or Jump Stomp. And if they catch on to the Ground Stomp after one of these throw a Fireball out instead. Mix it up.
To me, low grab is more useless online than ground stomp. It's very hard to hit it consistently which blows because her highest damage comes from Ex Low Grab. I wish it hit a little higher but o well...
I should post all of her updated combos but her highest at the moment are:
Ex Low Grab, NJP, B2, 1+2, Ex Grab N Punch - 56%
Ex Low Grab, NJP, B2, 1+2, Ex Anti-Air or reg Grab N Punch - 53%