Women's Ordination: 2 Qs

Two questions: First, I'm not aware of the theological background which defines the priesthood as representing "the ultimate sacred" or holding "ultimate power" in a way that is distinct (or to the exclusion of) the royal priesthood in which all the baptized participate.  If anyone has background on that I'd love to see it.  Second, if there is such background, would a vision of the priesthood as representing "the ultimate sacred" or holding "ultimate power" in a way that is distinct from the royal priesthood in which all the baptized participate be in sync with the vision of the priesthood that emerged from the Second Vatican Council?  Amy