Do you ignore manga phax?
U.U the part after was the most important since it was broken by sasuke...
Itachi wasn't trying to kill kabuto and he was and edo tense he knew he wasn't going to die so he could afford to be more careless
The very point I emphasize is, that Sasuke did broke free from Tsukiyomi. If from the fact of anyone including Sasuke, breaking it. Even if it was an asspull, as long as it's canon. It provides the fact that Tsukiyomi does not solo, period.