User blog comment:B214/Light Novel Volume 16 spoilers/@comment-1392308-20131019074749/@comment-1359322-20140128051807

Actually to the Gods from each myths, Rizevim isn't that of a huge threat, they could defeat him. The Evil Dragons and 666 are. Dragons are the most powerful beings after all. Even a Low-class Dragon has strength equal to a High-class Devil and Angel.