Kidomaru is a pretty strong ninja. His skills are at least that of a genin! Maybe even chunin level, but in the end it matters little, because Neji’s skills are far superior to his. Kidomaru’s good, but Neji’s better. That’s the bottom line. At this point Kidomaru couldn’t put up much of a fight against Neji. Neji’s attacks are just too much for Kidomaru. A new battle between them wouldn’t go like the last one. Neji wins.