Board Thread:Theories and Speculation/@comment-31099706-20170327120301/@comment-25122992-20170406162931

It's Itachi who's the user of Tsukuyomi, not Kakashi, thus his words are valued more than Kakashi's because he should know about strength and drawback of his own jutsu. And he said it's possible to break out from Tsukuyomi with the regular Sharingan, which Sasuke eventually proved. Also, the phrase "every jutsu has its weakness" comes from noone but Itachi himself. Plus, Kakashi didn't even have a proper control over his MS back then and again, he wasn't an Uchiha to begin with. Of course, nobody amongst Gaara rescue team (Naruto, Chiyo, Sakura) wouldn't have any chance against Tsukuyomi either.