So Part 1 Sakura fights Part 1 Hinata. Sakura throws kunai at Hinata, to which Hinata uses Kaiten. So Sakura throws a shuriken at Hinata and Hinata then uses Kaiten. Sakura throws a love note she got from Naruto at Hinata, etc. So Hinata is exhausting herself while Sakura expends no energy at all. Then when Sakura throws her very last projectile she can go pick them up again while Hinata is winding up to use Kaiten or using Kaiten or recovering from Kaiten. It just seems absolutely worthless.
Hinata can't use kaiten even until the end of Naruto. The only Hyuga who ever show to do that are Neji and hiasi. Heck Hinata can't even closed tenketsu. Hinata is weak even for Hyuga standar.
But even so, i Will not make claim that sakura Will win because unlike sakura, Hinata has gentle fist(jyuken).
This is part 1. Sakura is incredibly weak despite having more combat potential.
Throwing kunai is what ordinary ninja do, but sakura is not tenten who is the weapon specialized. And byakugan give Hinata better preception.
All in all if kishi give sakura a Jutsu or two in part 1, I Will guarantee you that all the talk about sakura bring useless Will be reduce.