User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-92.21.29.42-20190623153730/@comment-28884330-20190625081731

The Apophis fight was in no way harder for Issei than the Vidar one. Let alone the fact it was much shorter and with a stronger Issei, Issei didn't even have to even think a single bit in the Apophis fight and what he did was just blindly power through, as opposed to the fight with Vidar. He also wasn't brought even close to his limit as he could perfectly keep fighting afterward and even use Ddraig's flames.