But "woman" is not the same as "gentile," so the logic cannot be the same.  In fact, "woman" and "gentile" are quite different.  The logic is:  Jesus decided to exclude 12 X, each X having the ontological nature of X.  Maleness, but not femaleness, was part of the ontological nature of X.  And being a gentile is not part of one's ontological nature.  So logically, a female gentile could not be a priest (she has the excluded ontology), while a male gentile could be a priest, not by virtue of his being a gentile, but by virtue of his being a man, which is part of his ontological nature.