Seeing how they have fully matured I believe they are both just straight out incredibly godly.
Naruto:
Has hagoromo's yang, Olympic level strength and durability, peak human prowess. Incredibly fast and awareness that is only amplified greatly by sage mode. A sage mode current Naruto would be on par if not greater than BM Naruto war arc, the reason why I say that is due to Hagoromo's power that he possesses and hagoromo himself gained power from PRIME kaguya so current Naruto is around that level. His rasengans should be strong enough to take out a large portion of the village. I can't even comprehend how powerful RSM current Naruto would be like. The mastery of yang and the overall physical bulk and prowess, he could probably tank a meteor from madara's EMS that decimated the fourth division of the shinobi alliance and left shockwaves I mean heck BM Naruto was able to hold out against the 10 tail's tenpachi, RSM Naruto practically can tank anything that's not delivered from one on par or stronger than him. Basically the grand amount of yang mastery and overall mastery of his ability would make current Naruto God tier obviously. His weakest tech should be strong enough to put a dent into someone like the 3rd raikage's armor with ease.
Sasuke:Sasuke's level would be hard to pinpoint, yes he's godly as Naruto but Sasuke with his rinnegan has a TON and I mean a TON of techniques and options when it comes to his ocular abilities. But with supposed mastery of the rinnegan and EMS what he can do is versatile. Sasuke, currently with rinnegan mastery would be basically a berserker who can counter almost anything you do, his jutsu prowess is many times above madara due to hagoromo's yin chakra. All of sasuke's 6 (technically 7) paths techniques should be on a godly level plus sasuke has used them differently, for example even though he doesn't have an arm. Asura path remedies this, plus imagine him channelling such power through susano, a susano chibalu tensei or a mechanized susano with asura armor, Naruto will get sued by gundam but that's besides the point, sasuke's battle instinct should be incredible, he was capable of sensing sarasa and Sakura talking about them even from a distance. Plus with mastery of all 5 chakra elemts (with yin-yang release) it's possible for Sasuke to use kekki tota and other techs such as crystal, scorch, or even dark style. If sasuke masters all 5 of these he can manifest his own truth seeking balls as that's basically what they are composed of. And with TSB sasuke has even more options, whereas Naruto would be hard to damage, sasuke would be hard to actually counter as with his arsenal he could have an answer to everything. Sasuke's weakest tech should be exterminating forest with ease level.
But they both are quite Godly but they are both hard to fathom just how strong.
