Ok Lets just take ONE of Sakura's feats in the Manga.
Sasori poisons Kankurō. Sasori poison is so incredible that no one in Suna could counteract. They pull Chiyo-baasama out of retirement and even with her decades of experience and mastery of the poison art she can't figure out Sasori bass ass poison. Sakura come along and not only pulls the poison out of Kanauro, but analysis the poison and develops an antidote. All in a matter of hours without and complete chart of the original poison. Sasori himself wouldn't be able to pull that off!
Imagine the skill, intelligence and mastery of chemistry needed in order to pull that off. Sakura should ether be The leaf's chief medical officer or have her own lab and a staff devoted to making and improving medicines.
But what we got was and house wife with barely any lines.
Fuck you Kishimoto.