Naruto is the
PINNALE of chakra control.
At age 12 he mastered the rasengan. A technique Tsunade (Sakura's mentor) said was impossible for anyone but Jiraiya and Minato to master. The rasengan takes physically manifesting chakra in ones hand, giving it speed, density and giving it shape/form.
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Naruto mastered an element release with wind style. Furthering his level of chakra control feats by combining an elemental jutsu with a sphere of chakra. Thereby creating the rasen-shuriken.
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Sage mode involves balancing ones physical and spiritual energy/chakra with the chakra of the enviroment in a perfect balance. Recall what Fukasaku said
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Sage mode also increased Naruto level of CC to the point he could maintain rasenshuriken longer and could aim and throw the jutsu.
Kyubi Sage mode is another CC feat for Naruto. Pulling the chakra away from Kurama and suppressing his mind so that he is in control of Kurama's limitless chakra.
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Kyubi Sage Mode: Where Naruto combines physical, spiritual, nature AND Kurama's chakras to reach form surpassing all other Kages and living ninja. Combining 4 different chakras is the pinnacle of CC.
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Even Sasuke comments on Naruto's level of control.
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Finally Naruto with Hagormo Sage Mode. All his jutsus and CC are amped.
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Sorry but mastering the Yin Seal doesn't even place next to what Naruto is capable of. The same goes for Sasuke who literally uses his chakra to make a physical manifestation of a large ethereal tengu which is capable of attack, defense and flight. I don't even need to add Sasuke's own nature element mastery or his own variant of senjutsu.