User blog comment:Derax-Pagani/Chapter 507: Voice/@comment-5708675-20161025153003/@comment-7418318-20161027184125

"Twilight you're right about that, Brandish considers them equal"

No she does not.

Brandish might not have directly said "August is stronger than Irene", but she unmistakably said that August is "the strongest" of the 12. Not "one of the strongest" not "one of the strongst two" or "strongest together with Irene", but just "the strongest" period. There is no room for interpretation here, she stated it in an absolute, which means she consideres August to be the stronger one. That is a stated fact from the manga.