Board Thread:Versus Debates/@comment-46486865-20200730051057/@comment-26636534-20200730225450

@CursemarkSenjutsu

Interesting thought. A few things though, Hebi Sasuke didn't depend on Karin due to him not being seriously injured at that time. Also, I don't think it was ever stated that the curse mark gives the user the same sensory ability or degree of enhancement as sage mode does. Orochimaru being a third party to this battle is quite confusing. Is Orochimaru allowed to pop-out anytime?

I do recall that Sasuke used his MS on a cloud shinobi to obtain information. And Suigetsu commented how more convenient his eyes have become. So, that would be an indication of genjutsu improvement. Curse mark hasn't been shown to increase the range of Chidori sharp spear, which has remained consistent at 5 meters or healing powers.

As for an actual fight. MS Sasuke would probably use chidori and then switch to spamming Amaterasu and Susanoo. Hebi Sasuke would probably counter with Chidori and fire style. Though, I don't see Hebi Sasuke outrunning Amaterasu or breaking through Susanoo.

Also, chakra usage for Sasuke has been inconsistent imo. Hebi Sasuke used 7 offensive jutsus against Itachi ( 1*genjutsu, 2*chidori/chidori stream, 3*fire style, 1*Orochimaru substitution) plus CS2 activation, before running out of chakra. MS Sasuke at the five kage arc used 10 offensive jutsu (3*Chidori/chidori stream, 1*genjutsu, 3*Susanoo, 3*Amaterasu) and could still continue.

So I don't think this is an instance of Hebi Sasuke outlasting MS Sasuke.