Board Thread:Theories and Speculation/@comment-26479810-20191214162345/@comment-4080775-20191221164900

Sasuke doesn't surpass Madara in terms of Chakra. Madara literally had Six Paths Senjutsu and two Rinnegan and was a Ten-Tails Jinchuriki. There's absolutely no way Sasuke has ever had more chakra than Madara. I'm not sure Madara was ever shown being exhausted at all in the series except for when Hashirama stabbed him from behind. Madara was just spamming everything during the war, even after losing his Edo Tensei body. Sasuke's chakra at any point in the manga doesn't compare. Even when Sasuke forcibly took all the chakra from the TB he entombed and channeled it into his Susanoo, it still wouldn't compare to Madara's chakra as a TTJ.

Also, it seems you're assuming that the 1 clone got exactly 1/2 of Naruto's chakra. I think that's false because Naruto was continuously making clones the entire war and every time he made a clone, all chakra between them would split (Otherwise Naruto would run extremely low on chakra). That clone had fractions of Naruto's chakra. Really, its no telling how much chakra the clone even contained given that based on its principle, the Clone technique is an absolute waste of chakra unless the remaining chakra they didnt used it returned to the user upon the others getting dispelled.

Naruto had absolutely huge amounts of chakra before getting his TB modes and such, but used a lot of it to keep Kurama in check. Now that he got Kurama's cooperation and obtained the second half of Kurama along with Six Paths Sage Mode/Chakra, his reserves are as large as they have ever been. I don't think Sasuke's reserves are nowhere near as high as Naruto's. Maybe Sasuke can barely reach half, but I don't think its any higher than that.

The Rinnegan provides powerful chakra, but the EMS also allows you to use techniques a lot more, so it can be assumed that while Sasue got a boost in chakra thanks to his single Rinnegan, he also uses less chakra for techniques than he normally would. Master of techniques also help this.

So while Sasuke did get a boost in chakra quantity and can use techniques with less chakra, I dont think for a second that he has over half the chakra Naruto has, let alone more chakra than Madara had.