Well we need to look all up here.. Neji cant for one keep his kaiten up all the time. Other fact what will get Rock Lee to get closer the win is Lee's gates. Really, think about it. At the chuunins, Gaara's sand, what is automatic for god sakes, had no chance to beat Lee's, I dunno, first gate + weights off.. If Lee goes 5 gates on Neji, Neji has no time to run chakara around his body before hes kicked in the jaw and sended up to the air. For Neji, he should end the battle at the second it starts, charge up and take Lee off with his Gentle Fist, but if Lee works with his speed and moves around alot, Neji will loose if Lee goes all the way.