Hold on big boy,
Sasuke's Ems is advanced near to a level of Madara's, coupled with a perfect Susanoo shrouded in nature energy.
Is it really that laughable for a Sasuke win in this scenario?
By no means is Sasuke's victory assured, but it's a better fight than you think.
He hasn't shown that he can do that on his own, while its possible given that he does have Jugo's DNA inside him, he still needs to be able to gather it on his own and I haven't seen that he can do so.
Sure, he has PS, but is it the same size as Madara's? Doubt it considering the other Susanoo he has used have been smaller than Madara's.
And finally, PS isn't going to get through PS, this would come down to attrition and we all know who would win this.
EDIT: Lol, that was assuming Kurama was restricted, which it isn't. Madara would take this mid diff at best. PS and Kurama>PS alone.