User blog comment:B214/Question and Answers/@comment-9063800-20130504054952/@comment-1359322-20130504062507

Great Red and Ophis' powers are on a completely different dimension and can hardly be compared with God-class like Sakra (well technically Ophis is God-class). Whether Issei can rival Sakra depends on how well he masters the Boosted Gear and his new body.