Board Thread:Theories and Speculation/@comment-26358288-20150630121218/@comment-5273810-20150630223444

QuakingStar wrote: The chapter where he admonished Danzo for underestimating Sasuke's Genjutsu he says his Genjutsu are weak, but he places them with good timing. In that chapter he pretty much says Itachi is better than Sasuke with Genjutsu, so does Danzo. Looked it up it appears to be chapter 478, but I can't find Obito's comment. I think that may have been Anime only, or the sources online I checked both missed that page. Danzo's comment was "Compared to Itachi's Tsukuyomi where he could alter your perception of time at his whim...You're as far below him as the land is below the sky."

So I must concede to you this point. Sasuke at that point was not as good as Itachi in Genjutsu though at the point of his having EMS is still up for debate.