Hebi Sasuke wins this low-mid diff. The only thing Hiruzen trumps him in is experience and tactics; which won't be enough considering the gap of overall power here.
Shuriken kage bunshin is laughed at
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, and countered easily. Any fire style jutsu used by Hiruzen is fodderized by Sasuke's CS2 durability, and his earth wall defense is useless here. Hiruzen was just barely surviving when combating Orochimaru with Enma, so CQC with a much faster Sasuke w/ pre-cog is going to be onesided. Not only that but raiton flow means that Hiruzen can't block with his staff only dodge, unless he wants to get Enma boned. Add in CS2 capabilities such as OP ninjutsu and flight and we have an old dead man.