My argument for why Rogue class is a good fit for Myztero is:
With maxed rogue talent, Myztero can evade special attacks - YET memorize the status ailments from those special attacks. So, he has the chance to evade damage and still cast status ailments on opponent’s team. Pretty neat if you think about it.
I am not so sure about sorcerer class for Myztero. If anything it delays the opponent’s special. So, it will delay the utility of his special (He is already very fast).
Not sure what I could be missing…