Look again, it took grab > combo > reset grab to cause the stun, I'm actually carious how many characters in the game can't stun you with their max damage(excluding super) combo + two grabs. Combo length is awful through, that's MvC3 territory of down time.
Who is going to tech that second throw? Most are going to assume he's going for the stun. I don't see how one guess in between that combo makes it any less insane.