User blog comment:Stbk22/Possible Power up's/Techniques for then new group DxD/@comment-1359322-20140110163738/@comment-1359322-20140117121247

The situation is different between those two. Zephydor thought that he is completely superior to Sairaorg in every aspect and completely looked down on Sairaorg, Zephydor even looked down on the remaining participants, Rias and Sona included.

While for Riser, he realizes Issei's potential and admitted he would've lost:


 * “I praise you for doing this well for a [Pawn]. You really did well. To be honest, I didn’t expect you to do this well. The power of the Dragon user, I was able to taste that with my own body. If you had a year, no six months for you to get used to your Dragon's power I would have lost.”

So basically it's like