Yeah, EMS Madara's taking this.
First, BM Naruto only utilizes half of Kurama's chakra.
Not only does EMS Madara utilize all of Kurama's chakra, but he has Perfect Susanoo as a shield around Kurama. How can BM Naruto feasibly hurt him?
Madara has the defensive capabilities of Perfect Susano'o along with the offensive power of both 100% Kurama and that which encases it. He wins, soundly.
naruto is smaller more mobile, and can basically spam clones in sage mode. each bm clone is easily s-class level. and madara dodging a bajillion chakra arm rasengans is unlikely