Doesn't everybody trains their chakra control all their life in the manga ?
Think he mean that because Kurama made Naruto's chakra control harder for him, as Kakashi stated in part one, and that Naruto manage to accomplish the same things as other ninjas despite having more trouble, it was like Naruto had weights on his chakra control that made Naruto work extra hard in the chakra control training.
Naruto was only at a "Disadvantage" when oro put that five prong seal on him.
Kakashi said it was due to the huge stamina that Naruto has which stems down to Kurama inside of him. So pretty much, large stamina = harder chakra control. Naruto issue was that he would use too much stamina to accomplish the same thing that Sakura and Sasuke would do but he learned how to use the exact amount of chakra needed when he learned to walk on water. That was just an example tho/
You are acting like Sakura is really weak. She has excellent chakra control.
I think it's more that, Sakura was always better in chakra control so she never had to focus on that aspect of her training. She did have to learn more when she was learning medical jutsus and her super strength but Naruto main focus was chakra control. In part 1, Naruto learned the Rasengan which Kakashi called "extremely advance shape manipulation" which is chakra control and Naruto learned many stronger rasengans which would be levels above the basic rasengan. Nature transformation is another chakra control which Naruto took on and combined it with his shape manipulation.
Naruto had to exert more effort to manage his chakra while performing jutsus, yes, but Sakura was gathering Chakra in her forehead while eating, sleeping, performing jutsus, healing others, and while at death's door.
Well Tsunade only said she put some chakra in her mark over time, never said she continuously do it all day everyday. Also it's a seal, seal seals things so placing a seal there and pouring a certain amount of chakra there a day could be how it works. Shizune said the Yin seal was extremely precise chakra control, Kakashi called a base Rasengan extremely advance shape manipulation. Naruto also have nature transformation which was said to be hard training and Naruto had to use 200 clones in trying to combine the two chakra control types. Naruto has high chakra control in all types while Sakura only shown precise chakra control which she uses in her strength and yin seal.
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Agreed