User blog comment:B214/Question and Answers 6/@comment-39829421-20190616140318/@comment-187.180.176.223-20190616180117

Issei may have defeated Vidar, but Vidar is not among the Top 10 Strongest Beings in the world. Issei is still far from that level. Issei's Diabolos Dragon God has the same power as the Diabolos Dragon Lucifer form of Vali, and it has been described that Crom Cruach can fight on par with Vali in this form, then the Diabolos Dragon God of Issei is not stronger than Crom Cruach