User blog comment:Eduardovongola/Renji Overpower/@comment-1268838-20131228183426

Frankly, I think some people are overestimating the experience of some of these captains. Even during Turn Back the Pendulum, the majority of the captains were freshly promoted (relatively at least), Rose I believe being the last before Urahara. It might be a stretch, but I would argue that Renji's whole experience in Hueco Mundo gives him more experience than the average Shinigami captain - I don't think that kind of invasion of hostile territory was at all common in the past thousand years, given how difficult it is to get there. On top of which, even during the Arrancar arc, the Shinigami were clearly not used to fighting against Hollows that can fight on equal footing with captains.

My point being, yes, Renji is really freaking powerful right now. But there is no need to pretend that Kensei and Rose were that strong to begin with.