I beg to differ if anything sakura is a plank. Hinita is a very shy and modest character which probably helps contribute to her sex appeal assuring her place to be a figure who will be interpreted in works of hentai for many generations to come.

She dosen't flaunt her assets because she's always wearing that damn coat which prevents any sort of curves or sign of bust from being revealed. Although in the episode where she gets her ass kicked by neji and hear coat is taken off you can clearly see that hinita has signifigantly larger breasts then either sakura or ino. She is also more skilled then either of them because of her blood line limit.

Ha i challenge anyone to try and prove my theory wrong.