Board Thread:Versus Debates/@comment-28614651-20200422182101/@comment-4080775-20200517222441

Someone forgot how draining Sasuke's Space-Time Ninjutsu is:

"This technique requires a large amount of chakra, and extended usage leaves Sasuke incapable of using this technique, his Mangekyō Sharingan, and his Rinnegan's full power, for some time.[1]"

If Sasuke is put in a position to where he is forced to either let Naruto fight alone and leave himself stranded in Kamui's dimension, or get back to Naruto and help him fight, he'll always choose to help Naruto, this Kakashi can take advantage of this and force him to use the Space-Time Ninjutsu over and over until he isn't able to use it anymore.

I never said "Sasuke will run out of chakra before Kakashi," but we know Kakashi can extensively use Kamui a lot more than Sasuke can use his Space-Time Dojutsu to switch dimensions. Tsunade can lend Kakashi chakra if he needs to replenish his reserves.

It can even get worst, should Kakashi warp multiple FTG Kunai to his dimension and have Tobirama and Minato keep warping him back to Kamui's dimension, forcing him to use his technique to get back to Naruto. And it can work, given Sasuke summoned his Hawk to Kaguya's dimension, and the FTG is based on nearly the same priciples.