text: If you are referring to the Pontifical Scripture Commission, they have no Magesterial authority.  They can only report the conclusions of their research.  No theologian has Masgesterial authority.  Theologians are more like lawyers--in the sense that they argue their case.  They do not have the final word on the case, however.  That authority lies with the judge.  In this case the pope and bishops are like the judges.  They are the ones who make a definitive decision regarding what the theologians have reported.  
  
  The Church at ecumenical council and or the pope when he defines something are like the Supreme Court. Once the Church has spoken, the case is closed.  In the case of women priests, it might be arguable whether JPII issued a papal definition of a doctrine.  What is not arguable is that the teaching is infallible.  In other words--JPII likely just reiterated what the Church has always believed.