Wow. It amazes me how much people grasp at straws when trying to defend Sakura's character in this series. The fact that her claim to fame is something that happened 100+ chapters ago should really give you a hint as to how badly this character is written.
Well, to be fair, nearly every female charter in this series is written horribly besides Otohime who's basically god. But even then, that's not a character, it's basically a job description. I don't think Kishimoto hates women, but he does seem to have some sort of problem with them as almost all of his female characters either hug the sidelines wimpering about one of the males in the series, or they get a "Crowning Moment of Awesome" that is immediately invalidated by their male character counterparts.
Sakura gets this supposed super powerful upgrade that put supposedly puts her on the same level as Tsunade and allow her to stand on equal footing with Naruto and Sasuke, and what happens? The inventor of ninjutsu comes from out of nowhere and basically hands Naruto and Sasuke the ability to use every conceivable technique in the whole series? So Sakura is immediately back to where Kishimoto likes, sitting on the sidelines wimpering and thinking about Naruto or Sasuke, gawking at them displaying the ability of gods.
The thing is, in a series about a series that's mostly about fighting, healers will never take center stage nor will they be impressive in the slightest. If all a character has going for them is "healing super well and punching really ****ing hard" they will inevitably be pushed to the wayside for characters that can literally bend the elements to their will like a kid in a sandbox. So not only is Sakura screwed from a gender standpoint, she also is limited by the role she's supposed to play in her series, one that demands that you basically wait on the sidelines for all the big guns to get injured and heal them so they can go back out there to save the day. And no matter how much you try to hype it, that's just not exciting. Any exploits done by healer's are just not impressive at all.