Sasuke beats him mid diff
--He has canonically blitzed madara through his S/T jutsu, meaing that he is sufferring the same fate here, as gaining another rinnegan still doesnt help him react to it at all
--the only thing that madara has that could even scratch sasukes bijuu amped PS is the TBB however to do that madara needs to form the tree, therefore allowing sasuke more than enough time to eradicate the tree and intercept all of madaras attacks
--Madaras Limbo is nonfactor, the attacks such as rinbo hengoku are evaded by sasuke through utmost ease, or his Susanoo just tanks them with no damage whatsoever, as its slashes proceed to eradicate the clones completely,
--God tree is also nonfactor, it gets one-shotted by a PS slash which has comparable if not higher cutting strengthh than YRS which canonically eradicated it
--Madaras TSB shield isnt withstanding the force of sasukes attacks either, especially when a TBB from BSM Naruto bypassed it, nor are his onmyoudon negating shit, and his juubi body is also not tanking sasukes attacks when a normal rasengan busted a whole on juubitos body, meaning that sasukes attacks would eradicate madara,