1. She would never have a chance to use that against someone who can create a crater with her heel. And as far as I know that technique won't increase her foot speed
2. Not sure if
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3. Air palm is useless. Can be predicted or tanked by someone on Sakura's level
We both know Tsunade was handicapped in that fight and Kabuto was using pills to boost his abilities.
I never said it increases anything. I am saying her mastering 64 Palms is a strong testament to her speed, reflexes, movement, and precision in taijutsu.
I was talking about in straight up taijutsu only.
Doubt it can be predicted when it is invisible and notably fast. Hinata has the better predictive abilities anyways thanks to Byakugan's foresight, so she can "out predict" Sakura.
As for tanking, if Hinata can infuse her Air Palm with Rikudo Chakra, which should be possible since she did so with the far more advanced and complex Twin Lion Fists, it would add enough power to replicate her feat against the Juubi's hand, since both the Chakra quality and Chakra quantity is superior. And Sakura can't tank blunt force like that even with Yin Seal since Yin Seal relates to speeding up cell regeneration, which has no relevance to tanking blunt force. So she gets knocked out.