Sasuke destroys Neji, Hyuuga has moves to beat Sasuke In theory but Sasuke's speed and prior knowledge of the Byakugan won't let it happen. It sucks that Neji became such a fodder but he is just outclassed here.
You guys forget that with Sharingan, Sasuke will not get hit by Neji's jyuuken moves. Plus, with the Sharingan he can probably see Neji during his rotation and punch him in the face, especially since he has Lee's unweighted speed.