User blog comment:Crimson and Darkness/Volume 24 discussion blog/@comment-178.235.147.3-20171120163655

If Barberis is so strong that he could match Oophis in her prime the only way for Ise is using combined powers of Oophis and Great Red (supposed as ExE) but with his human physique it could be impossible for him  to unlock this power unharmed. Thus we still dont know it will be enough for Super Devil possesing power on par with Dragon God.