User blog comment:Piyush Banerjee/Shin DxD 2 discussion/@comment-92.21.29.42-20190623153730/@comment-34061653-20190627022551

I think the issue is Rias' combat success is not so good. Most of the enemies she beat are fodder that's below her level. She doesn't have a good win rate in personal battles. The only 1 vs 1 battle she won against someone on her level was Sona. Sure, she had that battle with Grayfia but let's be honest, Grayfia was outclassed from the beginning and wasn't going to beat Balor Rias. Other than that, Rias has lost many important battles. She lost to Riser, Regulus, Kokabiel, Fenrir and lastly Issei but then again, the odds of her beating Issei were slim to none given the overwhelming disadvantage she was in despite her half-baked countermeasures.