User blog comment:Ixarising/High School DxD Dream Battle/@comment-49.144.211.223-20140215140843/@comment-24468758-20140215231643

It is stated that the True Dragon Class is higher than the Dragon God Class in a system that is basically only based on power, so it is very likely that Great Red is stronger. Moreover if Ophis was stronger she would have just fought him to get the Dimensional Gap. It is not stated how much stronger Great Red is but he is without a doubt the strongest being as stated by Vali at Great Red's first appearance and only 666 has strength equal to him. We just don't know how high the chance is for Ophis to defeat him.