any mashing retard or anyone who can play the game can easily punish jin's 6B.
and both bang and tao's jumping overhead (bang and tao's 6B) can be beaten by just doing a normal poke...for gods sake I can stuff it with most characters 2A with 0 effort.
and if you do hit with jin's 6B then you should be able to capitalize on it.
jin's 6A is fine it does its job quite well.