pre-time skip Sasuke vs. post-time skip Sasori...
I don't know. ::shrugs:: I mostly watch Naruto to enjoy the characters, not their fighting abilities(though I love to watch the battles and enjoy their moves, I just judge their power by what Kishimoto says)... and I'm gonna assume that because Sasori is an Akatsuki member, and Sasuke has only just gained the CSL2, Sasori would win. But then again, Sasuke is smart - but I don't know if he has knowledge of a puppet's weakness... he'd probably be freaked out. ::shrugs:: I don't really know. lol.
Soooooo.... yeah. ^___^