User blog comment:Sosuke Aizen008/Who is the most powerful in stern ritters?/@comment-5657895-20130924160306

I'd say Jugram, Old Man With Glasses (He beat Shunsui), Nodt, Kirge, and BG9 are the most powerful seen thus far. This is excluding Uryu and Yhwach, because Yhwach is one of the strongest in the show I think, and Uryu has the power to surpass Jugram. That's why he's successor.

I have a theory that the A, B, C, D, E, F Stern Ritters are the strongest while the lower ones like R, S, T, U V and so on are the weaker ones.

Loyd Royd (Memory copy) was pretty strong. Strong enough to best Kenpachi when even his brother (Who can copy powers) couldn't. And he did it easily as well.