no he can he has transportation jutsuSasuke. naruto has no way to breach susano'o and no way to counter kirin.
I think the whole I can see darkness thing was a phrase dude. Not to be taken literally.Ems is the same as ms but the level of the powers is much better without any blindness risk. That means unlimited and better amaterasu, better tsukuyomi and all that stuff without any problems. And ems can see in darkness.