The Azamara ships are two of Renaissance's R class ships and are the same as Oceania's three ships (Princess has the other three of the eight built). I believe that Azamara styles itself super premium rather than luxury, in essence saying that they are trying to compete with Oceania rahter than Regent, Seabourn, Crystal, etc. If you compare the tonnage per passenger of the ships, you will see one reason why - more space per passenger.