Sasuke wins low-mid difficulty.
Both hype and feats put his speed and reactions to be well above Kimimaro's. Being healthy won't bridge the gap that much. Drunk Lee and gated Lee were too fast for Kimimaro to physically evade and instead had to block Lee's hits. Sasuke is faster so he can hit Kimimaro just fine. Sasuke managed to evade and hit V1 Ay in the chest and Kimimaro is no comparison.
Bone bullets are easily evaded and while Sawarbi no mae may be a threat, cursed seal wings and snake arms can be used to avoid getting impaled by gliding and swinging around.
Chidori easily goes through Kimimaro when a samurai chakra blade could partially pierce through. Even if CS2 boosts Kimi's durability so much that even chidori becomes ineffective, Sasuke uses CS2 and pierces through.