User blog comment:B214/Volume 23 discussion blog/@comment-95.90.224.203-20170418121747/@comment-26926813-20170420075954

Lol HD tier > God tier

Most of God's cannot stand agains someone who is Heaveanly dragon-class power. Pretty sure that only a top Indian God's like Indra, Vishnu, Brahma could stand agains them on equal and Shiva are much stronger than Heavenly dragon-class.

As I understand from spoilers AxA is his final and strongest mode, because it's stated as True Power of Issei who born with GR flesh and Ophis power. That mean that this form is combining of GR and Ophis powers. And also said that part of ExE power are soon face up which mean ExE < AxA because he unleash that power faster