Don't have to be a fan of Naruto or Sasuke to believe Naruto has better chakra control. Kurama said he modified his chakra then handied to Naruto and Cei, a Sensor said it was Kurama then said no it's Naruto's.
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So Naruto was handing out his chakra that he would transform to suit other types. Transforming chakra is what Physical recomposition is except you're changing it to match a person's chakra. Kurama said he'll explain how to do it to Naruto
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and he compared Naruto to Minato and Kushina, both who weren't perfect Jinchuurikis. Clearly Naruto's base doesn't have enough chakra to power up the alliance so why would he do it with his own? And what would be the differences of knowing how to change chakra using a modified chakra that was made to resemble yours and using your regular amount? Kurama even said it's the same method Minato used.
How did the rasengan argument get shat on by the control Sakura use for her punch when Kakashi only said she couldn't do it without precise chakra control yet called base rasengan extremely advance chakra control. Tsunade even said the FRS was " an impossibly fine attack that causes damage on a cellular level..."
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. Also included that it probably takes the wind chakra and use shape manipulation to change it to countless small blades that attack all the cells in the body
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, it's something even her healing can't heal
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. Both Yin seal and FRS are S ranked and both tanks high chakra control but this was FRS at about 50% the power
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Naruto's base rasengan was called extremely advanced spatial recomposition/shape manipulation so wouldn't that make all of Naruto's more powerful Rasengans even more advance? FRS at about 50% was said to make countless small blades by using shape manipulations on the wind chakra to attack each cell in the body, that's a cellular attack and it's completely chakra control. What do you think FRS at 100% chakra control is like? or the Oodama chou FRS?
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That's chakra control at a cellular level.
You seem to forget that Naruto learned to use his chakra precisely in part 1. Or do you not know what the walking on water was meant for (
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Pa toad stated that it was near impossible to learn how to keep spiritual, physical and natural energy all balanced
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. Shikaku even said Naruto was on another level while in SM and he was the smartest ninja alive at that time (until he died) so why would anyone compare Naruto's chakra control to hers when she's not even the best in the world, Neji and Tsunade shown more impressive chakra control or can you name anyone other than Neji to open all chakra points, can increase or decrease a ninja's chakra flow and used his chakra control to break out of Kisame's water prison.
REad my about replies for what I think about Rasengans and it's variations.