On chapter 51 of Tokyo Ghoul RE they talked about Noro, they said besides Sachi and Owl, Noro should be in the strongest class, so they basically acknowledge Sachi being on Owl level and we've seen what he did to Kaneki without even trying, the same Kaneki who could scratch Arima, while Eto didn't do a thing against him but run with her tails between her legs.
This is old Kaneki I'm talking about, present Kaneki should be on his level or at least give him a better fight.