Hmmmmm....you changed terms on me ("womb bearer" to "God bearer"). I suspect womb bearer was an oversight as God bearer is the correct Catholic term.
Any believer would agree that Mary's role in bring Christ into human form was a unique priveledge. But would you rate the miracle of the Virgin Birth against the parting of the Red Sea by Moses or Elijah raising the woman's dead son? What is the ratings of miracles?
Who are we to judge the miracles of God? He performs each miracle to accomplish a specific purpose as it pleases Him.