No proof of what exactly?
Overall SM is superior to MS and Sasuke is confirmed weaker than Pain arc SM Naruto as said by Zetsu.
People seem to think that Pain Arc SM Naruto is as far as that mode gets in terms of power and well everything else, but that isn't the case. Now then(talking about Pain Arc Naruto) if the issue is the time it takes to undergo SM, then okay. Naruto is efficient in creating diversions giving him the necessary time to enter it and then it's game over. Hebi Sasuke isn't Pain who is arguably more powerful than Itachi who spared Sasuke's life. So just because Naruto struggled against Pain doesn't mean it would be the same against Sasuke. Now then in your first post you said
SM Naruto, not base Naruto, is inferior to Hebi Sasuke, you should know that that is far from reality. Look we can go back and forth and formulate how the hypothetical battle could go, but would things really go that way? Probably, probably not. ¯\_(ツ)_/¯
As for SM and MS, they both have their limits. The more experienced Naruto is in using SM, the faster he can undergo it. He can also take care of the time limit via fusion with Ma and Pa for continuous NE. Sasuke on the other hand is going to hit a peak with his MS, then his eyes are going to start to deteriorate, which will result in blindness. As you can see the limits on MS are greater, while SM limits can be overcome. (More examples being Hashirama and Kabuto) Which leads to my original statement that
Overall SM is superior to MS.
He's like that; hes got no Proof for his arguments but when calls him on it/deconstructs the fraility of it; he resorts to fanfic. No point in arguing with him honestly.
Lmfao.
^Says this yet every time he argues he brings nothing to back up his points. Takes what happens in the manga and twists it to fit his narrative and tries passing his fanfics off as facts. There
is no point in anyone arguing with me if all they're gonna bring is their Fanfics/Misinterpretations and Twisted Logic.