That's what I've been wondering. I'm not talking about the reputation since Kakashi already has an impressive reputation among all ninjas, but in terms of power. Hatake Sakumo apparently was about renown, if not superior to that of the Sannin. If we take it to mean power, it means that he was as powerful or more powerful than any of the Sannin. Now Kakashi has already accomplished alot: able to master a bloodline that no one but the clan members can, one of the youngest Chuunin ever, a certified genius, one of the 2 strongest, if not single strongest, elite Jounin in Konoha, has over a 1000 moves, trained by Yondaime, and just strong in all areas. But he hasn't surpassed Hatake Sakumo. I personally think that Kakashi could have surpassed the Sannin and Sakumo a long time ago if he really was serious about it and was still as dedicated to being that strong. It seemed after the Kakashi Gaiden that he just slacked off or something in training which stopped his progress. After the Itachi fight and the Sasuke arc, I think we saw him get serious, that's why he's improved so much in such a short time (like making a new deadly move and getting rid of his weakness due to the Sharingan). We see that once Kakashi is serious, then he gets much stronger because of his resolve (that's why the same move never works on him twice). So what I want to know is, do you think Kakashi will ever surpass Sakumo and the Sannin? Will he do it soon? Will he do it later? Has he already done it? What do you think?