This is going to rustle the tall grass for some folks.
With both having full intelligence I wouldn't find it hard to believe that Killer B wins with medium/high difficulty.
Killer B's Pros against Itachi:
Stamina: Killer B outclasses.
Genjustsu counter: Killer B is a perfect Jinchuriki that can break out of Genjustu let alone if he even looks into Itachi's eyes which is most likely he wont.
Taijustu: Killer B is most likely better.
Weapons: Samehada
Itachi's Pros against Killer B:
Genjustu:Mangekyō Sharingan, Kotoamatsukami (But not really because he already used it on Naruto so it's really out of the picture).
Ninjustu:Susanoo, Yata Mirror, Sword of Totsuka, and Amaterasu (Which will be absorbed by Samehada as Amaterasu is chakara based move)
Key points: Genjustu is out of the picture as Killer B will not be caught by it let alone kept in it. If off rip the fight begins and Itachi and Killer B clash if Killer B can stay on him because he is much faster than Itachi he can overwhelm him but Itachi is and intelligent shinobi so he'll back up and try to use Amaterasu which will be absorbed by Samehada and even if you disagree with that if it manages to hit B, B can take off his clothes as Amatersu burns slow. This is stated in the wikia [However, the flames burn fairly slowly, sometimes allowing anyone struck by Amaterasu an opportunity to remove whatever clothing or body parts have been caught ablaze]
That would be an awkward fight as B would be naked.
Now Itachi is forced to use Susanoo which I believe is not an instantaneous thing. If Killer B can overwhelm him he can maybe prevent Itachi from summoning.
If B cannot prevent him from summoning Itachi takes the upper hand with Yata and Totsuka.
Now Itachi takes the offensive end. Bee takes the defensive and with his raw speed evades Itachi's attacks continuously (I believe B can evade Itachi unless someone can disprove me otherwise) until Itachi tires which will be very quickly as his stamina is minuscule compared to that of Bs.
Once Itachi tires his Susanoo diminishes and he suffers great backlash and is defeated by B.
I tried to be as unbiased as possible. If someone has a problem or would like to make any inquires towards me please do so. I would be glad to change my mind if someone can prove me wrong. I believe B can just wait out and evade the Susanoo until Itachi loses it which will be fast. If someone disagrees please give me some examples and some evidence and I will gladly switch over. If i'm forgetting something please enlighten me.
Let the debate begin.
With both having full intelligence I wouldn't find it hard to believe that Killer B wins with medium/high difficulty.
Killer B's Pros against Itachi:
Stamina: Killer B outclasses.
Genjustsu counter: Killer B is a perfect Jinchuriki that can break out of Genjustu let alone if he even looks into Itachi's eyes which is most likely he wont.
Taijustu: Killer B is most likely better.
Weapons: Samehada
Itachi's Pros against Killer B:
Genjustu:Mangekyō Sharingan, Kotoamatsukami (But not really because he already used it on Naruto so it's really out of the picture).
Ninjustu:Susanoo, Yata Mirror, Sword of Totsuka, and Amaterasu (Which will be absorbed by Samehada as Amaterasu is chakara based move)
Key points: Genjustu is out of the picture as Killer B will not be caught by it let alone kept in it. If off rip the fight begins and Itachi and Killer B clash if Killer B can stay on him because he is much faster than Itachi he can overwhelm him but Itachi is and intelligent shinobi so he'll back up and try to use Amaterasu which will be absorbed by Samehada and even if you disagree with that if it manages to hit B, B can take off his clothes as Amatersu burns slow. This is stated in the wikia [However, the flames burn fairly slowly, sometimes allowing anyone struck by Amaterasu an opportunity to remove whatever clothing or body parts have been caught ablaze]
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That would be an awkward fight as B would be naked.
Now Itachi is forced to use Susanoo which I believe is not an instantaneous thing. If Killer B can overwhelm him he can maybe prevent Itachi from summoning.
If B cannot prevent him from summoning Itachi takes the upper hand with Yata and Totsuka.
Now Itachi takes the offensive end. Bee takes the defensive and with his raw speed evades Itachi's attacks continuously (I believe B can evade Itachi unless someone can disprove me otherwise) until Itachi tires which will be very quickly as his stamina is minuscule compared to that of Bs.
Once Itachi tires his Susanoo diminishes and he suffers great backlash and is defeated by B.
I tried to be as unbiased as possible. If someone has a problem or would like to make any inquires towards me please do so. I would be glad to change my mind if someone can prove me wrong. I believe B can just wait out and evade the Susanoo until Itachi loses it which will be fast. If someone disagrees please give me some examples and some evidence and I will gladly switch over. If i'm forgetting something please enlighten me.
Let the debate begin.