Base sharingan beats all gen bar tsuk, didn't Sasuke fall for finger gen? Also Kamui is obvious because it's his only MS tech once Itachi see that activate he know it's coming. He can't counter tsukomi and Kamui is obvious. As for base techs and tajustu Itachi wins he was shown without blood-lust to be easily outclassing Kakshi in part 1 and even without MS he was shown keeping up with Bee. So I don't get where you get that standard BS bceuase when it comes down to it 3tome Itachi>3 tomoe Kakashi. Itachi speed feats are way better than Bee's same with his taijustu.
Sasuke isn't kakashi. Kakashi was able to break obito's genjutsu and as it stands obito and madara were the only ones to control kurama with 3t genjutsu. Something itachi though you needed ms for. Obito even kept perfect jins under genjutsu for YEARS. Itachi barely manages a couple of seconds. So yeah. If it isn't tsukuyomi I doubt it's gonna work.
In part one kakashi matched him jutsu for jutsu. Even sneaking a clone past him and saving kurenai. Something both itachi and kisame didn't notice. While kakashi on the other hand was able to identify itachi's clone and protect kuranai from it. That fight resulted in itachi having to use tsukuyomi cuz like I said. It was the only thing that was gonna work.
Kakashi kept up with and read the movements of 4 v2 jins. These beasts are already known for their unpredictability when it comes to chakra arms and such. Even hampering the sharingans ability to track them.
As for speed he kept pace with 6 gate guy, tracked obito's movements and kept pace with v2 jins. A base killer b doesn't even compare.
And that's just going off war feats.
Itachi has never seen or heard of kamui while kakashi saw all three of his ms techs. Even worse itachi has no feasible way to dodge or block it.
Face it. Itachi can't play with the big boys anymore.