Board Thread:Naruto Discussions/@comment-28374870-20160504013153/@comment-734582-20160504085156

It kind of depends against what kind of Kakashi we're talking. It's not often mentioned, but he did develop over the course of the series, significantly increasing his ability to use things like Sharingan and Mangekyou but also things like Raikiri (being able to channel it through a kunai and throwing it).

Part I Kakashi was strong but Part II (shippuuden) Kakashi was quite a bit stronger. As to Hokage kakashi, there's a few unknowns that make it very difficult to gauge his strength. E.g, does he still have Six Paths chakra?