This is Base Sakura, who had just finished dumping so much chakra into that fodder Obito that she nearly fainted.
This is probably the best argument for it to be an outlier.
But we dont really know how much Chakra her punches take in base. She has a good little time to recover Chakra after she gives it to Obito as well
Prior to this, her best statement is being relative to EMS Sasuke and MKCM Naruto (yap).
Idk how its yap when there is basically an entire chapter hyping her up to be on their level, like its pretty clear that the intention is that she isnt just yapping
And like, to be on the level of KCM and EMS Sasuke, without any of the hax or abilities or durability that they have, it would make sense that her striking AP would have to be a lot higher than theirs and that appears to be true at that point
Also characters in the war arc get randomly stronger and emotionally amped all the time. Like look at Kakashi, or like, Naruto and Sasuke who get way stronger from the Madara > Kaguya fight
Sakura was consistently shown and stated to be fodder against Madara and Kaguya,
Well, she is fodder to them, because she lacks any defense for TSO, she lacks flight, durability, any range attacks, etc
Though Madara still blocked her with a Limbo clone rather than eat a hit, which like, is consistent with her having high striking AP, and Kaguya treated her as fodder, and got ****** for it
Also she has the feat where she reacts to Kaguya's arm, and with the punch she reacts to Kaguya's flight speed, which are both not AP feats, but shows she is getting stronger
The databooks even say she is on par with them, specifically referencing the Kaguya fight too
makes no sense for her punch to do more damage than Naruto's 9 Rasenshurikens
If anything I feel like the Rasenshuriken feat is the outlier
Kaguya was somewhat hurt by Naruto's punches, he rips her arm off with just a chakra claw, and with boil release he was putting the hurt on her
But instead of it being an outlier, I feel like the Rasenshuriken actually did more damage than anything else, it was just internal, which makes some sense when you look at Ay3 and Kakazu
It did manage to unstablize the Bjuu inside her
Takes place 12 years later, not sure how that would back up the feats she had as as child
Because its like the next feats she had? It doesnt really make sense to me to think she got 1000s of times stronger like in the blank period, she was busy being a parent
Also, I think calling something an outlier is like/should be, more based on later feats than feats before, because characters in Naruto get stronger over time
Like I wouldnt consider Kakashi's feats against the v2 Jins, or Obito to be outliers because he was struggling with Zabuza right before it
Kakashi just gets randomly stronger during the entire War where he goes from below Pain / around Kakazu level pre-war, to fighting on par with KCM Naruto and Obito somewhat in the late war
But I guess I have just never been a fan of "outlier" arguments in general. Like they always seem kinda subjective to me.
And in this case you are throwing away a feat that is her highlight moment, when I really dont see any striking strength antifeats, you still didnt really give any, just that she was low on Chakra
Her being fodder to Madara and Kaguya isnt an antifeat imo because it is still true regardless of if she has Naruto level striking, she would never land a hit without help, and she has no way to seal them
Even like, the comparison to KCM and EMS isnt an antifeat imo because she would need to have higher striking AP to be anywhere close to them
And again characters seem to get randomly amped during the war anyway so I would prioritize feats that come later