Board Thread:Versus Debates/@comment-38812954-20190925155207/@comment-31338621-20191001184709

Now that I think about it, there's no way Hebi Sasuke broke out of Tsukuyomi on his own. Itachi had more powerful eyes, not just due to having the Mangekyou sharingan (MS), more importantly the depth of Itachi's feeling were stronger and we the sharingan is the eye that gets stronger with feelings, according to Tobirama.

Sasuke wasn't willing to kill innocent people (other than team 7) to kill Itachi. He showed mercy the Sound nins and the Curse Seal nin. For Itachi however, Sasuke was more important than Konoha. Sasuke didn't start Itachi's level of crazy until he gained MS.