-Madara can still produce Bijuu binding outer path stakes in this form. Naruto is fodderized. Then there's the fact that a close range Shinju release is canonically death for him unless someone saves him, and considering his partners will be too busy being dead....they can't help.
-Madara IS Obito in a combat sense, but better, and with extra abilities, so Obito can't beat him, and Hashirama can't see Limbo.
Madara eats them for breakfast.
