No one should need EMS to do that it is considered as hightest range of genjutsu.......Obito able to do that bcoz he already has MS as wel as Hashirama's chakra ........Hashi's chakra alone is enough to put kyubi under control..............When Itachi and Sasuke fought they talked about many things including the MS ability to control Kurama... it wasn't fully clear to me... every MS user Uchiha can do it like Obito did? Or not?