User blog comment:B214/Question and Answers 6/@comment-185.112.105.215-20170127034753/@comment-9595671-20170127072042

They could surprise us, other than Riser's peerage, they and their peerages have fought beings clearly above Ultimate Class devils during their time as members of the DxD Team.

Certain devils like Diehauser? They might win, but I doubt just fighting a high-class or ultimate class would mean they'd lose. Especially high-class devils since with the exception of Cao Cao, they're also high-class Devils.