Lol, anyone who thinks Nagato can match the current Madara is just... There is nothing Nagato can do to beat him. Gedo Mazo is synced to the Rinnegan so it will be useless for both because they both will have control over it. Chibaku Tensei is nothing but a black hole that has a strong gravitational pull. All Madara really has to do is either crack or chip the black orb and that attack will fall apart since its designed after a black hole. Even if it sucks him into the rocks all Madara has to do is summon his Susanoo which is basically what Naruto did but instead he turned into the 9tails. Or he can just use wood release and crush the black orb if it sucks him into it.