Board Thread:Versus Debates/@comment-36351381-20180802192015/@comment-34194151-20180807001316

In terms of combat intelligence he is definitely up there with kakashi (naruto when he isn't a bumbling idiot) tobirama, and minato. I even put him above shikamaru only because Shikamaru takes longer to use his intelligence, he needs more prep and concentration time to make his plans...

Sick Itachi could keep up with hebi sasuke in stamina. Healthy itachi showed strain only after using 3 techniques and splitting his stamina, which is more than enough to take on pein. so imagine 3 techniques before he begins experiences strain, but because his life is on the line he can push himself. even with 3 full powered amaterasu he poses a great threat to pein because that by itself takes out half the peins, and that isn't even taking into account itachi's strategies. And also, he has other techniques that can potentially kill peins, phoenix fire shuriken and kunai are still sharp objects that can sear through vital spots like the neck. not to mention clone explosion. If it comes down to it he can just strain with susano'o, and he would fare better than with his sickness. His sickness compounded his stamina issue and made it worse, he definitely has an advantage with his sickness gone.