That's not the point I am attempting to convey. The fact is that when Kaguya's chakra arm collided with his PS slash, the PS slash failed to break through it and was instead overwhelmed; it means that Madara's statement was disproven whereas Itachi's remains as a fact.
Except you don't know if that is what happened. All we see is PS go in, and then come out destroyed. Naruto punched through those chakra arms with his enhanced strength, and stalemated them with his own chakra arms, briefly. One isn't deflecting a PS slash. Not a chance.
Minato's reaction speed is on par with the likes of Tobirama, someone whom responded to Juubito mid-blitz;
Base Minato? Where's the proof?
Bee's reaction speed stalemated with Minato's
Uh, no, it didn't. B managed to predict Minato coming after him, thus set up his sword appropriately. That doesn't even begin to translate into their reaction speeds stalemating.
and Itachi's proved to equal Bee's when they fought each other.
Once again, no, it didn't. Itachi evading B's seven sword strike doesn't mean his reactions are on par with B's. It means his reactions are fast enough to evade B's attacks, which would translate to striking speed. Not reaction speed. Doesn't matter if it did though since B's reactions have never once been demonstrated to be on par with Minato's, and Minato (Base) has no feat that compares to Tobirama's.
If Itachi can react to Juubito whom responded to a Susano'o slash then he can replicate the feat.
Except Itachi can't react to Juubito.
Until I see a manga scan contradicting it I'm going to have to accept it, hyperbole or not, which it isn't. The databook goes into further detail explaining as to how and why it negates all attacks and they don't word it in that fashion.
Its a logical fallacy, so using it as an argument isn't going to fly. Its that simple. The DB explaining how it does it, doesn't mean that it can do it to every single attack.
The swords would be recovering from the recoil of the ST. By the time they're fit to slash at it Shisui's eye will already be in range.
1. He has two swords, and only needs to attack with one at time. That negates this.
2. Recoil from ST would be like what? A few seconds? PS is as tall as a Mountain. Itachi's crow isn't flying across a Mountain height's distance in a few seconds.
With the Gedo Mazo here then Nagato has a sure way of combating PS.
Gedo throws out attacks weaker than Bijuu Dama that didn't scratch PS, and it has defensive feats that lead me to believe it'll tank a PS slash, so its just one more thing that gets obliterated by Madara's blade.