Board Thread:Versus Debates/@comment-28300173-20161104104110/@comment-3965545-20161119142642

Itachi only needs normal Genjutsu for distraction, or stalling. Also if he didn't outpace B then B would have got him with Acrobat.. Naruto specifically warns B of Tsukuyomi and Amaterasu despite him being a Perfect Jin, meaning that being a perfect Jin cannot save you from Tsukuyomi. Hence if Itachi catches A or B in it then it is over for them.