I'm sure there's an explanation but...
OK, help me out here.
I had a Battlegrounds match where I used America Chavez vs Red Skull. What was weird was that when I tried to throw her heavy after only 1 or 2 basic attacks, it didn't inflict the stun and I got punched in the face, but when throwing it after a full MLLL it worked fine.
Is there some mechanic I'm missing, or what?