So we should have to stack materia for one specific resistance type, because it's far more powerful than every other type of control? What about when we don't fight BLM and/or WHM? Wasted materia slots. It's been stated enough times, and almost always argued against by the class that has said control. If you have to put an extreme amount of effort into countering one specific control effect or class, that class/control effect needs to be looked at and possibly revised.