This has been bugging me for some time. Sharingan allows you to put the user in genjutsu. Many people suggest that there is no Genjutsu: Mangekyo Sharingan despite Sasuke using genjutsu with the MS sharingan. If there is no difference in genjutsu prowess why have him switch to the MS against B as a primary example. Again against Danzo.
When Sasuke obtained the Rinnegan someone gets the idea that its a whole different level genjutsu but no one suggests that the Mangekyo Sharingan has its own genjutsu power.
There is also the case of Sasuke having Tsukuyomi just not as advanced as Itachi. If there is no Genjutsu: MS than he used Tsukuyomi on B but that leads to the fact that Itachi said that only someone who is very close blooded to the user can break it but that could just be as far Itachi knew and since the databook is outdated brings up confusion. There are a lot of assumptions and I suggest that if we can allow Genjutsu: Rinnegan than why not Genjutsu: Mangekyo Sharingan. What do you guys think?