User blog comment:B214/Question and Answers 4/@comment-24098614-20150214225932/@comment-1359322-20150215020833

You're currently under the assumption that Creuserey is on par with Maou-class which we absolutely have no confirmation on.

But from my personal view, the 3 descendants of the Original Satans aren't even Maou-class. Hey Vali is stronger than those 3 yet he's not Maou-class, how could they be Maou-class.

Creuserey was finished off like he's nothing when Sirzechs was just fighting normally. Even Katerea was the same. If Kokabiel who is weaker than Azazel is said to be capable of destroying the entire Kuoh Town if he's serious, imagine the damage that would occur if Azazel were to fight seriously. And even when Azazel was holding back, Katerea had to depend on Ophis' snake to fight Azazel on par. And if you ask me, the only reason why Azazel used his artificial SG is to obtain data rather than Katerea being stronger than him.