I don't think konahamaru is the type to just sit around, as seen in his fight with pain. He got mad potential, using shadow clones, rasengan, and figuring out the enemies jutsu, in one move, against a very powerful opponent, and at a fairly young age. And that was the only thing we've seen from him so he could have more for us. So mass potential, but no way will he surpass naruto, or minato for that matter. They have mass raw power. But I think he will be there for the war and he will be hokage after naruto but through brains, not brawn.