Kimimaro i'd say if he didn't have his disease but i'm sure Asuma would put up a pretty good fight. Kimimaro's just more agile and flexible. His scrapnel attack alone would be pretty dangerous.
if asuma has powerful fire jutsu that explodes, wind enhanced brass knuckles that cut through rock! it all depends on kimmimaro's durability. if he can stop wind-enhanced blades, he takes it high diff.