User blog comment:B214/Question and Answers/@comment-50.11.177.49-20130619001255/@comment-1359322-20130619005937

The ranking of the strength between each of the Four Great Satans were never revealed, it is just known that Sirzechs and Ajuka are the strongest of the four and are equal in strength. The current Maou are all nominated, the Devil society needs new leaders that can lead the Devils and are of great power.