User blog comment:B214/Shin DxD 1 discussion/@comment-30230931-20180804194539/@comment-33939194-20180806224155

Issei fell into Baraqiel's trap of castling by using his conversation about Akeno. Issei fell into Dulio's trap by confining him by using Gabriel swimsuit. Rias knows about Issei's perverted nature can be use as a weakness as volume 10 and 23 has shown. Ravel maybe a better strategist but the point is Rias can outsmart Issei. Issei and Rias know each other well but the difference is Rias is more cunning and can lure Issei into traps.