Explain to me, how ems Madara loses.. :-/
Amaterasu gets absorbed or repelled.
Any ninjutsu gets absorbed or repelled.
Taijutsu is stupid because Nagato can use his Asura path to get metal skin and shoot rockets, etc. out of his body.
Moving in close is also dumb as Nagato can steal his soul with Naraka (?) path.
And then there is normal shinra tensei, chibaku tensei, and that insanely huge shinra tensei, which does not take Deva out for 30 minutes but instead takes him out for a little bit over five minutes.
Naruto had 5 minutes in Sage mode per clone during that fight and Deva was ready to go before the first clone was summoned.
And then there is all the summons, such as that Gedo Mazo dragon soul stealing thing where the dragons just need to touch you and you die. No one can survive that jutsu.
The only reason Itachi beat Nagato was because he had the Yata mirror and Totsuka sword. Without the Totsuka sword, Bee, Naruto, and Itachi would still be fighting Nagato right now.