User blog comment:B214/Volume 23 discussion blog/@comment-76.175.162.45-20170416055242/@comment-31137559-20170416182517

People think overwhelming Vali for 3 minutes equate to Issei beating him. Unless Vali was knocked unconscious, dead, or unable to continue fighting, Issei didn't defeat him. While Issei did defeat Loki, but could he do it without his comrades' help and Saji was the one who held Loki long enough for Issei to do it. And Issei and Sairaorg defeated Grendel.