Sasuke needed more mentoring than Naruto...
P.S.
To do something about the CS and also Sasuke was in many ways similar to Kakashi so he wanted to create a V2.0 of himself...
And Hebi Sasuke w/o CS was really Kakashi 2.0...
Naruto had trouble summoning a tadpole after 2 weeks of training, and Jiraiya had to throw Naruto off a cliff to force him to use the Kyuubi's chakra to summon a big toad.
Meanwhile, in 2 weeks Sasuke started using his 2nd nature element ,and developed it enough to master the Chidori + Attained Lee's High speed Taijutsu which took Lee years to achieve. All this while dealing with the Curse Mark, and having to think about Orochimaru being after him.
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I said two weeks instead of a month because at the beginning of chapter 93 it says, "15 days since the start of training", and later in the chapter we see Sasuke, and Kakashi meet up, and Kakashi says, "So You're finally here", thus implying Sasuke had just shown up to start training with their being only 15 days left.
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This,and the next page.
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Sasuke needed the training so he wouldn't rely on cursemark. Had he not gotten the cursemark all 3 would get trained at the same time as per ususal.
Kakashi only singles ppl out for special training.
He did the same for naruto in frs when naruto when naruto didn't want to rely on kurama.
Sakura got no love cuz she has nothing.
You're right on everything except the Sakura part. Kakashi told Tsunade about Sakura, which was part of the reason why she accepted her as her student, and at the beginning of Part 2 he said she had the potential to surpass Tsunade.
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