Board Thread:Naruto Discussions/@comment-26773508-20160331045011/@comment-142748-20160401082901

Kakashi is unable to use the Raikiri. Without the Sharingan, its an incomplete technique that is more of a danger to him than the enemy. And yes, he is the weakest Hokage. Tsunade is at least able to protect everyone from Pain's super Shinra Tensei which destroyed the village, force edo Madara to use a Mokuton Bunshin, and defeat a Susanoo Mokuton Bunshin. She's solidly in the middle when it comes to being a Hokage.

Kakashi's intelligence is his greatest trait, but he lacks the power to protect the village itself. Its like what would have happen if Shikamaru had became Hokage. Sure they're smart enough for the position, but they lack the capability to lead due to the fact that their techniques are simply not strong enough to protect the village from threats. He'd have been killed instantly by Orochimaru without his Sharingan.