Board Thread:Versus Debates/@comment-43403813-20190805194702/@comment-43403813-20190810023844

@AsianReaper

Absence of evidence does not constitute impossibility, and the perfect comparable example has been seen through Kaguya's dimension, which as stated by Obito is a lot similar to his own. I speculated earlier that Kaguya's interstellar travel may not be a Rinnegan power, and instead be Sharingan, Byakugan (unlikely) or an inherent ability of her own. Moreover, the ability to exit Kaguya's dimension via reverse-summoning as well as Sasuke's ability to summon Garuda provides the theoretical grounds that Pain can reverse-summon from Kamui. Also, there has not been several ways shown to exit Kaguya's dimension. The only ways are her own wormholes, Obito's incredible strain sifting through each dimension (not teleporting out completely), and reverse-summoning.

The cooldown does have a 1 to 1 correlation with chakra. This has been emphasised time and time again, and the process has been broken down completely by Katsuyu. Pain's base usage of Shinra Tensei will always be 5 seconds, but when he tacks on more chakra, the interval is longer, which is why Chaotic Shinra Tensei had an interval of half the battle. More chakra, longer interval.

You're severely underestimating the cost of using Chaotic Shinra Tensei. It literally reduced his life span, indicating that an extremely unhealthy amount of chakra was used up in one go, most likely at least 50%. Something like Chibaku Tensei is intended to be as destructive as it is, and normal usage of it has shown no adverse effects like your life being shortened. Pain adapted a technique that is supposed to be used only at base or slightly stronger levels, and amped it to an immensely dangerous level. And the craziest part about it is that he had fought the entire Hidden Leaf before this.

When Nagato invaded the Leaf, he obviously went as the Six Paths of Pain. What you fail to realise is that his mode of attack is six individual people fueled by the chakra pool of one person. If you got someone like Kakashi or Itachi to split into 6 different people but still retain the chakra of 1, they literally wouldn't last minutes if they were fighting the amount of people that Pain fought in Konoha. So this, along with Chaotic Shinra Tensei, Pain's fight with Sage Naruto, Ma and Pa w/ Toad Summonings, the six tails Kyuubi cloak, the use of Chibaku Tensei and the revival of hundreds if not thousands of people with Rinne Rebirth, demonstrates what a chakra monster Nagato is.

Realistically, I would guess that Sasuke has 1.75x to 2x the amount of chakra that Nagato has, absolute maximum. He hardly uses any extreme chakra taxing techniques against Juubi Madara, being one amped Chidori, a few Rinnegan TPs and a few swings from a Susanoo sword. Then with Kaguya, we see a few more Susanoo sword swings and one Amaterasu. Then Sasuke gets tp'ed to the desert where he doesn't get any action for a while. When he finally returns via Rinnegan TP, the only other attack he does against Kaguya is a final Rinnegan TP + Chidori. The battle ends when they put the seals on Kaguya.

The only extreme chakra-taxing technique that Sasuke uses before his battle with Naruto is multi-Chibaku Tensei, and I am absolutely confident that if Nagato was at his prime amount of chakra, he would be able to make either one gargantuan Chibaku Tensei, or multiple Chibaku Tensei's, and this is ignoring the fact that a strained Pain said that he would be able to enlargen Chibaku Tensei anyways! Even in Sasuke's battle against Naruto, he utilised Kirin which is 100% external chakra, and he stole a ridiculous amount of chakra from the nine tailed beasts to fuel his strongest attacks for the second half of the fight, and stole some of Naruto's chakra in the last skirmish. Sasuke knew his weakness when he fought Naruto, he knows that his chakra reserve has never been the greatest, so he took measures to turn the battle in his favour. I completely agree that Sasuke has more chakra than Nagato, but absolutely not "bajillions" or "many times more", I realistically estimate that he has no more than double Nagato's chakra supply.

Your original point was that Sasuke would be able to summon Garuda because his chakra is "bajillion" times more than Nagato's, but I've made my case that Nagato's chakra supply remains more than sufficient to comfortably be able to use reverse-summoning to escape out of the Kamui dimension.