I'm seeing a lot of hate and negative responses on both sides, and both use the same arguments towards one another..lol
Kakashi isn't that smart, it took him forever, he only figured it out because he has that same jutsu as Tobi (many people claiming they figure out the connection along time ago, while i only saw 1 thread on this, and the poor guy/girl idk was heavily ridiculed to think kakashi was the one to of hit Tobi)
but the same could be said of Itachi, most of his use of intelligence was because the use of his sharigan ie: breaking free of kabuto control, stopping kabuto, breaking free of jirayu toad, etc. both guys are smart but for whole figuring out the rinnegan he had naruto there and also he had no fear of actually being harm, that makes a huge difference in strategizing and being in the moment..
while i dont necessarily care for the itachi, i am a kabuto fan, because the guy is definitely OP and pulls jutsu out of nowhere, he also OP with his intelligence and i think he is smarter, but c'mon kakashi is smart too stop with all the hate.. too much cursing and negativity here, just state your opinion maybe a reason why and leave it at that jeez..
PS: how did Naruto learn the sexy jutsu becuz thats pure genius right there haha, konohamaru is pretty smart too i guess with ninja talent.. he learn the sexy jutsu and rasengan without tailed-beast chakra but i guess talent is in his blood