22 VB whiffs on:
scorpion
ermac
reptile
kitana
sektor
cyrax
smoke
kabal
kano
quan chi
skarlet
rain (corner only)
F23 VB whiffs on:
Ermac (corner only)
reptile
sektor (corner only)
I didn't test B2f1 VB against all the characters, but I would guess that it would whiff on the same characters who already cause 22 VB to whiff. If this is true, I really don't see why you'd use B2f1.
scorpion
ermac
reptile
kitana
sektor
cyrax
smoke
kabal
kano
quan chi
skarlet
rain (corner only)
F23 VB whiffs on:
Ermac (corner only)
reptile
sektor (corner only)
I didn't test B2f1 VB against all the characters, but I would guess that it would whiff on the same characters who already cause 22 VB to whiff. If this is true, I really don't see why you'd use B2f1.