The upgrade list on CO.com only includes passengers who have checked in, so we know they checked in after you did. Are you sure your CO number and not your MP number was on both your and your wife's reservations? I have had a couple mixed itineraries where the MP number somehow got associated with my reservation even after I had changed the reservation to add my OP number. This would have made your status lower than someone with a CO PPlat number on their reservation.