Sasuke still wins this
--there isnt much that GUy could do here, when he doesnt have anywhere near the durability to tank a PS slash, meaning that Sasuke swings his PS blade and Guy gets bisected, and his speed is also meaningless when he cant evade its AOE nor can he breach his susanoo before he gets butchered,
--Kakashis PS is nowhere near as strong as Sasukes either, so his PS gets outclassed as well, Kamui shurikens are countered with enton variants and repeated PS slashes from sasuke eradicate his Susaanoo, using S/T to coordinate with his PS just means that his susanoo gets smacked around much easier
--once PS is out for kakashi, sasuke closes the distance and severs kakashi in half by amenotejikara, so he dies, using kamui raikiri is also not helping
--Kakashi isnt countering rinnegan genjutsu either, so thats also a GG