Board Thread:Theories and Speculation/@comment-31099706-20170327120301/@comment-31338621-20170425160915

@CyberianGinsing:

The context of the situation did not imply that Kakashi was talking only about Chiyo's methods of breaking genjutsu. What Kakashi and Chiyo said is similar to this:

Chiyo: if we stab his armor with this technique he'll go down

Kakashi: In this case that won't work. He uses a superior armor to the original. It doesn't matter what technique you use, they won't work on it.

Like I illustrated above Kakashi said in a general sense, not in a specific sense that cancelling the effects will not work. He may of started of talking specifically about specific methods, but then he moved to general methods. If he meant Chiyo's method were the only ones that won't work he could of said "His genjutsu is instant, those methods will not work." Instead of "His genjutsu is instant, there is no cancelling the affects of it."

Kakashi having the MS actually supports my point. Kakashi fought without looking in the eye despite having MS. Kakashi didn't think his MS could defeat Tsukuyomi.