User blog comment:Crimson and Darkness/Shin DxD 3 discussion/@comment-79.119.70.247-20191014170553/@comment-79.119.70.247-20191015195837

you are right, but Issei is much stronger than then + because some time has passed since then and Issei was able to gain experience in using new skills, skills that were freshly awakened back then. You know how, the author tries to take a little longer to fight to win the attention of the public, it is true that a fight won easily and without emotions is more boring, that is why the author is "forgetting" certain skills that Issei has. :))