You actually think sasuke can beat them "thats unbelievable" Neji May not win, but he does stand a chance. His Byakugan gives him abilties that could see things coming from anywhere(minus small blind spot) and rotation if used correctly can be effective against any attack.
Yup. Also, I think the biggest factor in this scenario would be timing. I believe that with proper timing that Neji could hold off a majority of Sasuke's attacks. The only question is, how long would he be able to keep it up?