Board Thread:Naruto Discussions/@comment-36528625-20180810001142/@comment-34194151-20180826005105

old edo tensei, "immobile" nagato would get one shotted by totsuka blade as per canon. He can't mentally react to the blade as per canon to even use shinra tensei lol, so good luck to him improving his reaction time. Kabuto was referring to itachi's strategic mind and power. Itachi is a genius of combat, not a whole lot of shinobi can read the opponent's patterns of attack, break them down, and counter them as well he can.