I'd agree with Sieg actually. You gotta know what to expect in each stance, and realise that rouletting is just him asking to get hit. And that you can punish the SSH mixup. Oh, and the iagA and SCH B frametraps will get anyone who doesn't know the MU.
i forgot about Z.W.E.I. thanks, isn´t it interesting that the characters that the characters that can abuse this more are the less used ones? it´s like a paradox.
Well if characters are less used, people have less experience against them - that's why it's easy for them to abuse a lack of MU knowledge.
I'd argue a Mitsu player could easily abuse MU ignorance, but since there are so many Mitsus out there, it's pretty rare for that to happen.