Sasuke is almost a non factor. The winner would be Sasori with high difficulty.
Sasuke a non - factor in this fight? Lol, you're joking, right? Flight, Enhanced Speed, Enhanced Durability, Enhanced Chakra, Manda & Metal Snake he used against deidara to tank some attacks, etc etc. He can literally fly up and snipe.
Poor sasori in this fight. Starting in Hiruko, ugh. But sasori is near undefeatable with no knowledge. I'd have to say mei could take out hiruko easily, but if he makes it to his regular puppets & scorpion, he solos LOW diff. But sasuke can literally just snipe. Let them fight, set up field for kirin in the air, GG.