User blog comment:Kaido King of the Beasts/How Do You Kill Quincy Jesus?/@comment-11293956-20151212224925/@comment-14244059-20151213163454

I think it's to demonstrate the differences between Nimaiya and Byakuya's power. Despite all of his training and power-ups as of late, Byakuya did not have the raw power and talent that Nimaiya had, which allowed him to become a member of the Royal Guard. That, and we have to take into account the power-up Gerard and the others received from Yhwach.