Board Thread:Naruto Discussions/@comment-26636534-20171019193715/@comment-26636534-20180107102601

Those jutsu's you speak of are mostly hax, the crow inside of Naruto was one of Shisui's hax eyes, Izanagi and Izanami are hax too. Sure, you need the correct amount of planning to utilize them but, not exactly a feat of pure genius, just overwhelming ability.

Again, it's a bit assumptive to say what Itachi could have done, but to me that is not enough to say he or any other shinobi is smarter than kage.