Such a hype bag. Bee was fighting off Minato in their encounter wheras in canon Itachi was out-performing Bee against an even greater shinobi.
Minato was fighting both A and B 2 vs 1 and dominating the fight
But grew fond of B after realizing he is more than a simple jinchuriki to the point that even after marking him, he initially wanted to leave it at it
It's only after A still wanted to have another go, that he decided to threaten B with the kunai, but without striking him instantly post-hiraishin. B was then lucky that he already had his weapon in the back, but considering he was already marked, Minato already had that fight won, despite it being a 2 vs 1
And according to the databook, he fought them both multiple times, and judging by the way A was thinking of Minato as unsurpassable with B trembling by the mention of his name, it seems like Minato was like an unsurpassable wall to them
On the other hand, B was dominating Itachi when he started actually using his real fighting style(with all his weapons)
And this was base B who was dominating him, even launching his weapon faster than Itachi could release Amaterasu(saved by Nagato). As a perfect Jin, he is also immune to genjutsu, chakra arms also render amaterasu overall useless
And Itachi also claimed that yasakani no magatama was his strongest range attack, but it's nothing compared to continuous bijuudama
Overall B is a superior fighter to Itachi. Against Nagato, Itachi just had the luxury of observe from the background while Nagato was busy dealing with Naruto and B, sneak in and talk about the way to attack CT, which was pretty straight forward to be honest. In a 1 on 1, B is superior
Itachi would have trouble hitting Minato but it would be the same other way around with genjutsu and reactions, don't compare a 18 year old Obito who wasn't known for intelligence to Itachi he wouldn't be blitzed the same way nor would he overestimate himself.
Uchiha obtain their max power through their MS unless they steal a close one's eyes to obtain EMS, except in Obito's case where his powers were further enhanced due to Hashirama Senju's cells. So Obito was already at his max power when he fought Minato, that until the war arc where he gained the Rinnegan
Also, Obito wasn't known for his intelligence because he was supposed to have died decades ago. The Obito who Minato fought was completely different than the Obito who was in the village
It was a Obito who unlocked the most dangerous MS ability, had both Uchiha+Senju power(which was mentioned to give a whole different level), was personally trained by Madara both in terms of jutsu and ideology, who recognized after his revival that he was especially cunning, knowing his boy must have a plan in mind
His ocular powers could control Kyubi, could extract Bijuu, summon him, a feat only Madara could do before him, could control a perfect Jinchuriki
And that same Obito mentioned in the war that he never considered Madara as his ally since day1, with Madara having to use backup plans in Black Zetsu or the mind control in the heart to try to fool him, and ultimately still failing in the end in the end due to Obito predicting all that in a mind game battle
Itachi who you mention to be smart never knew Obito was Madara even after his death
With Obito calling him a failure who only failed in his entire life
Obito was superior to Itachi in almost everything
Also can't remember but are there instances of Minato placing a FTG seal on pure chakra at all, p sure he did to BM Naruto so it stands to reason he can't just poof the susano'o off of itachi.
Tsunade could break Madara's susanoo arrow and use it against him, so while they are formed by chakra, they have physical form
Its high-difficulty either way. You're insane if you think Itachi is ever getting tagged or blitzed like Obito was, his "Mentor" lolol.
It's Itachi who said himself Obito(who he thought was Madara) was his mentor