I agree somewhat....Obito was trained by Madara, but as far as potential Itachi is far above him I believe. Also Minato defeated a child iirc...and that child pushed him to a point where he had to decide against a split decision on wether he'd win, or lose. Obito is no slouch, also Konan imho would have easily lost had she not prepared the way she did. With that....I believe Itachi could easily decipher Kamui faster than Minato. If he prepares like Konan knowing about Kamui....Obito would be dead. Obito says this himself.... Oh....Itachi could also use Izanami...though I feel hanging out with Madara, Obito has a counter to it somehow idk.

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Obito fire jutsu alone is superior to Sasuke's which is stronger than Itachi's. A 14-15 year old who was trained my Madara, had Senju DNA and was using a hax power. No Itachi couldn't, Minato was surprised attacked and almost warp but FTG away and already knew the aspect of how Kamui works. Itachi would have to attack him and analyze how Obito Kamui thru the jutsu and need Obito to try and warp him to know that Obito needs to be physical to warp him which he wouldn't know unless he tries too but Itachi has no way of escaping while being warp so he would lose while analyzing it.
Madara taught Obito Uchiha kinjutsus which includes Izanami and Izanagi and Itachi called Tobi his teach so it was Obito who trained him. Itachi also said Izanami isn't a jutsu to use in a fight because you can escape from it and who's better to escape than the guy who trained him.
Manga proff = "every jutsu has weakness" - by Itachi himself hes intelligent if you didnt noticed that.
Obito is intelligent as well, he's been manipulating ppl since he was 13 years old. How would Itachi know of Obito needing to be solid to warp him or even be able to warp him unless Obito actually grabs him and warps him which is Obito winning. Kakashi, Guy, Bee and Naruto all figured out Obito's weakness of having to be solid to attack/warp and still couldn't hit him without using Kakashi's Kamui so no Itachi isn't doing what those 4 couldn't do without Kamui.
First this thread is not for fanboys/girls just for logic people.
Itachi could kill Obito anytime he would wanted. Reason he didnt simple - cuz Itachi was a fail.
He underestimated Obito and thought he didnt know truth about him.
Itachi himself admits that he was a fail when he was alive. So this is the reason why he didnt tryed to kill Obito.
Amaterasu? Yeah as i said before he underestimated Obito so he though this will be enough to kill him.
Now we saw several times Obito was hurt in battle(Minato, Danzo fodders, Konan injured him)
So this proves hes not invincible. As we know Itachi >= Minato > Konan > Danzo fodders.
Im not using ABC logic here just clearing this up. Or maybie justranking inteligense here.
Minato and Konan was able to see Kamui weakness. Minato did it in instant, Konan prepared and Danzos fodders was lucky.
Itachi easily saw Rinnegan vision, Chibaku and Edo tensei weakness. Plus hes the one who stated - every jutsu has weakness.
I guess this is enough to prove he could see and Kamui weakness easily.
ABC logic says Itachi could and Manga feats says the same thing.
Itachi vs Obito battle would be very similar to Konan vs Obito.
Itachi would prepare himself and with his inteligense and battle tactics easily ambush Obito.
Obito would be dead like he said himself. The end.
Nope, Itachi would did trying to analyze Kamui, still now be able to hit him and waste his chakra, or get a Kamui/wood style combination and end it. Minato is stronger than Itachi so don't try that, Shunshin counters the sharingan and it took Madara to even get A into a genjutsu which A couldn't believe happened and Minato is even faster than A so don't count for Genjutsu or Amaterasu hitting him.
Itachi saw thru the Rinnegan's weakness while Kabuto was focused on Naruto on Bee, he didn't do that in a 1 on 1 fight. He was able to see how Kabuto made Nagato counter Bee's attack, thus you use a feat made with help. Yes he saw CT weakness but he couldn't do anything about it allow, he asked Naruto and Bee to use their strongest jutsu, if he didn't need help then he wouldn't ask for it (he asked Sasuke to look in his eyes when they were under sound genjutsu). He didn't really see thru edo's weakness but figured there had to be one (was going to use genjutsu to make Kabuto tell him how to stop it) and Kabuto plain out told them what to do.
If Naruto, Bee, Kakashi, Guy were unable to hit him even after learning of his weakness then how do you expect Itachi, who prolong his life using medicine and if pushed too far dies, is going to do better? Naruto, Bee and Guy all have speed equal to or greater than Itachi as well