Cursed seal= Sage mode
MS= Nine tails chakra mode
EMS(with Final Sussano v4 included)= BM
CM Final Sussano v4(not used by Sasuke yet)= BSM
I agree completely with that.
Thank you very much

I am glad we agree
I agree with everything but the KCM - MS Sasuke comparison.
I don't see how Sasuke can keep up with 20 different KCM clones, all capable of using FRS.
Well this is true... but by MS Sasuke I meant MS Sasuke at full power(Incomplete Sussano v3 with possibility of comming into Final Sussano v4.)
That Sasuke could do that becuase he would begin with fresh and full healthy eyes... so he could last longer as he wouldn't have to develop his Sussano but having mastered it from get go.
However If you have problem with that... then I see another possible comparisions between Sasuke and Naruto:
Cursed seal level 2= Sage mode
EMS(With Incomplete Sussano v3.(with no leggs just same Sussano as against Danzo))= Nine tails chakra mode
EMS(with Final Sussano v4 included)= BM
CM Final Sussano v4(not used by Sasuke yet)= BSM
The only difference between EMS Sasuke(limited to Incomplete Sussano v3.) and MS Sasuke could be that EMS Sasuke doesn't have bad side effects from using Mangenkyou techniques and his eyesight is not affected..., but they are both at the same level.
Wrong, Zetsu said SM Naruto was stronger than MS Sasuke, note Naruto wasn't using prefect SM (fused with Ma and Pa toad) and Sasuke didn't fully master his MS (didn't have Susanoo) so if they both were at their best then they'll be on even footing so Curse Sasuke is current Base Naruto now or initial kurama chakra. KM chakra arms can pull Sasuke from Susanoo from underneath it then clones and kill him with Rasenshuriken/Oodama rasengan/ mini rasenshuriken to the face or to the heart/ planet rasengan that he used on Muu/ double rasengan/ or use his pure strength to crush Sasuke (the same strength he used when he crushed the boulder just trying to hold it. He had to train to not crush things) then moment Sasuke is pulled out.
Zetsu compared SM and MS so don't worry they were wrong on that account.
Zetsu was only comparing MS Sasuke , who used just Amaterasu against Killer Bee and MS genjutsu(weaker version of Tsukiyomi) to Sage mode Naruto, that all. That Sasuke wasn't even shown using Sussano....
Anyway Naruto was in Sage mode when he was in his way to help Kakashi(and stop from Killing Sasuke), and he could sense Sasuke's power then so that why he said that he couldn't beat current Sasuke and he needs Kurama powers to do that.
Naruto wasn't talking about blind MS Sasuke of course, also not about ribcage v1 or full skeleton v2 Sussano. He could reffer to Incomplete Sussano v3(against Danzo) or even for short time unleashed by Sasuke Final(Complete) Sussano v4. I am more convinced that Naruto was talking about Incomplete Sussano v3. but maybe it was Final Sussano(doubt as it was only unleashed for split of seconds).
However I agree that Curse seal could be more likely compared to Current Base Naruto or even to Initial Nine tails mode.
However Zetsu's statement isn't accurate as MS Sasuke used and developed his Sussano after Zetsu's statement.