Moving to have a case dismissed is NOT the same as moving to withdraw a plea. That is a distinction which made Powell’s motion nonsense.
Correct. They are not the same. Asking for dismissal is a better option and withdrawal has the risk of a lengthy trial.
So the strategy can be: Brady first, then dismissal. If failed, withdrawal. Sounds very logical to me. They should not play both dismissal and withdrawal games at the same time.