User blog comment:B214/Volume 23 discussion blog/@comment-77.188.219.183-20170424155339/@comment-79.25.167.4-20170425111251

@The Ultimate Pawn. I don't think it's quite right. Issei's DxD is not less powerful than Vali's. He was nerfed because the first time he activated it Ophis gave him her own power, not only the blessing. So she took that power back, Vali was only blessed.