User blog comment:B214/Volume 23 discussion blog/@comment-1359322-20170519103917/@comment-27876048-20170520034146

I know that Issei is far outclassed by Vali but ultimatly its come down to experience in my opinion. Vali, along with talent, immense demonic paowers, and DD, has over a decades worth of combat experience. Issei definietly needs more experience ans training before he even starts approaching Vali's level. The only thing he beats Vali in is attack power.