User blog comment:B214/Volume 23 discussion blog/@comment-95.90.224.203-20170418121747/@comment-26926813-20170418143459

Normal State (current) - middle or high-class Devil (due influence of the Dragon Godification)

BxB - One of the strongest among High-classes Devil's, probably near Ultimate-class if this state became stronger from Dragon Godification

CxC - Satan-class, much higher with Longinus Smasher

Pseudo DxD - Low God-class power Normaly, Middle God-class power with Max power of Infinity Blaster

DxD from Volumes 20, 21 - little above Heaveanly Dragon-class Power

Incomplete ExE that we will possible see in Vol.24 - at least Heavenly Dragon-class Power

Complete DxD possible = Complete Ophis

ExE - Should be form of 100 meters Dragon from EX. Power is at least equal to Shiva or even higher (strong enouth to easily trashed a guy who is equal to Main Gods of Myphologys)

AxA it's not a power of Great Red, according to Ajuka it's "True power of Issei who born with GR flesh and Ophis power", so it must be Ultimate, absolute at least Dragon God-class power (maybe armor)