User blog comment:Crimson and Darkness/Volume 25 discussion blog/@comment-39.33.238.88-20180427023452/@comment-2602:306:CD9A:C860:F4F7:7C15:F813:9A7F-20180428084327

It really depends. If this was volume 22 through 24 Issei then yes, Rias Forbidden Invade Balor the Princess would actually be superior because Issei at that point could only maintain Psuedo DxD for 3 minutes at most and only 10 seconds if he used Infinity Blaster. Even Maou Class opponents could survive that but Rias Balor form is beyond Maou class and she can maintain it much longer than that short time frame even though the form is still incomplete.

Now if it's volume 25 Issei then no. Issei Psuedo DxD is much superior because not only is it stronger but he can maintain the form for 88 minutes and he defeated an opponent who was stronger than Fenrir. Right now Issei can match opponents in the top 10.