Does landing a counter-hit have any special properties to it. Frame advantage or something?
What’s the difference between a counter-hit and a reversal?
For sf4 btw 
Counterhits are when your move’s active frames hit an opponents startup frames. It gives your move extra frame advantage so you can do combos otherwise not possible
Reversals are just moves done on the first frame of wake up, reversal attacks can break armor as well
Don’t they do extra damage as well?