Say if Sasuke was still healing up and Naruto went in to save the day
He would of killed Madara.
Naruto and Sasuke were basically toying with him
The same Naruto that fought Kaguya would of mopped him.
Nope. Madara was being nerfed, an unnerfed and serious Madara would destroy both Naruto and Sasuke in the war. Madara has more chakra than War arc Naruto so he can make more clones than Naruto and each clone can use the same jutsus as Madara so each clone would have a Limbo clone, PS, deva path, Pretha path, wood jutsus, and any other jutsus he has. Naruto has his chakra, Yin Kurama, Hagoromo's Yang chakra, other 8 Bijuu chakra (small amounts), and natural energy while Madara has his chakra reserve (larger than Naruto's when he's 17) and the Juubi's (yang Kurama=Yin Kurama, then the full amount for the other 8 Bijuus). Madara can make 25 wood clones which each use Limbo so 26 Limbos and 26 Madara's (Madara and his clones are in PS which is stronger due to Juubi chakra. Madara use TSBs to block attacks (they can tank strong Senjutsu attacks as shown with JJ Obiti against Naruto and Sasuke), Pretha path absorbs ninjutsu/chakra, BT to pull anything towards him.
Madara's base skills are higher than Naruto's base skills so that plays a big factor since both are me to their powers.