User blog comment:B214/Shin DxD 1 discussion/@comment-3965848-20180903064427/@comment-34061653-20180909161903

That's precisely what I'm saying. You see @Ultimate Pawm, your argument is Issei is an inexperienced king which gives Rias the edge but that doesn't mean much when Issei has beaten kings who are better and more experienced. Sona for example is a better king and tactician than Rias and yet Issei still beat her. Yes, Sona's team is weaker than Rias but as you said, rating games are not entirely about power and Sona is a prime example of this.

So if Issei was able to beat Sona who is a better king, than what other argument do you have that Rias has the edge in? Power? Issei has the advantage in that. Tactician? Issei has Ravel.