User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-92.21.29.42-20190623153730/@comment-34061653-20190627084529

@Demonicjester01 The difference between Issei and Rias is that Issei was born with his Longinus while Balor Rias is a fusion of 2 people. Also yes, Rias countermeasures were half-baked. You're telling me that despite her being the most knowledgable of Issei, the best she could think of was just recovery means to "Dressbreak" and block off Pailigual? First of all, I wouldn't call those countermeasures. Countermeasures is something that will give you an advantage or weaken the enemy but none of Rias countermeaures gave her any sort of advantage whatsoever.

Let's look at other example of countermeasures. When Issei beat Riser in volume 2, he used holy and a cross that not only counter Riser's regenration but also damage him which gave Issei the means to win. Sona used Issei's blood as a countermeasure to take him out of the game without him noticing. Ravel used Tsubaki's weakness of the homo Issei×Kiba to take her out and Cao Cao.... well you saw what he did in volume 11 to the entire Gremory group. The point is Rias didn't comw up with countermeasures to exploit Issei of any weaknesses or give her an advantage. At best it just gave her a means of survivability so she wouldn't get one shotted and in the end it amounted to nothing as Issei's Dressbreak still worked as it was key to him beating her anyway.