User blog comment:B214/Shin DxD 1 discussion/@comment-30230931-20180804194539/@comment-34061653-20180806171749

Perhaps but I don't think that was the main point Indra was addressing. The problem was Issei relies too much on Ravel because he needs her to function his team where as to Rias, she can function her own team. This is an issue because we've seen how Ravel has to give individually commands to certain members of her team instead of Issei doing it. This is critical when it comes to rating games because makes Ravel a weakness. Why engage with Issei when the main threat is Ravel. Take her out and the team falls into disarray. People like Cao Cao could exploit that.