ST Balrog/Old ST Balrog questions can be asked in this thread. I'll update it regularly.
C.MP - This is his best ground attack, despite not hitting low, the entire arm is safe and cannot be hit, but can hit the enemy (its a completely red hitbox, no blue).
C.HP - Best anti-air non-special. Hits early and late, unlike most moves in game.
S.MP(far) - Second best anti-air move. Has more range than the C.HP.
I'll add more over time, just ask away and ill be happy to fill in info about him.