NO. I don't care what other arguments you have, if they can't beat him it is not because they lack that Deus Ex **** You All Tension In A Fight Machina.
They have demonstrated that both of them can kick madara's ass inside out when he had one rinnegan. Wtth the second rinnegan, only his limbo count and rinnegan abilities improved, so if Naruto and Sasuke can beat him to a pulp with one rinnegan, they can do it with two.
They have allready prooven that Bijuu Extraction works to defeat a Juubi Jinchuriki, so they can kill him by extracting the bijuu. If you think that they wont be able too, just remember that they were weaker than JJ Obito but clearly stronger than JJ Madara, and Super Bijuu Rasenshuriken exists. Also, Madara isn't very hard to get bijuu off, Obito managed it on a healthy Madara.
It's called plot bro, Kishi nerfed Madara because he couldn't figure out how to defeat him; he said he didn't know how to in interviews if I remember correctly. 1 eye JJ Madara owns Naruto and Sasuke unnerfed. If you don't think so then where was Madara's use of wood clones, forest emergence, flower world, wood dragon, katon jutsus, Susanoo (showed use without eyes and with 1 eye pre-JJ. his Susanoo would be stronger than Sasuke's after he absorbed Bijuu chakra since Juubi>some Bijuu chakra), Deva path (ST and BT), Asura path, Pretha path, his MS jutsus, and he was missing most of his TSBs.
The true power of the eyes awaken when you have both eyes, that's stated by Madara and Obito. Madara with 1 eye can use shadow clones which all can use the same jutsus as him so Limbo, deva path, Pretha path, and Susanoo from all Madara's plus he could most likely use share vision with them since they are all connected by chakra like the Peins. So anything War arc Naruto and Sasuke dished out would be absorbed or deflected and if they went PS and full Kurama avatar mode then Madara would have a stronger PS plus his TSBs can slice through Susanoo. Edo Madara used BT with his partial Susanoo so using Pretha path with his PS probably isn't hard for him either.
Current Naruto can win since he can extract the Bijuus due to having their chakra but Sasuke can't do that; Madara would have a stronger Pretha path to prevent that from happening and Madara allowed Obito to get that close to him thinking he could manipulate Obito again but got surprised attack and lost only a small amount of chakra.