Kaiten can be beat by chidori wif maybe this way..

Say Uncle/neji start up kaiten, then kakashi/sasuke go farther distance. then thrust foward in their fast speed. start up chidori. Jump as high as they can. fall down directly above kaiten while spinning the exact speed or more counter clockwise or the opposite of kaiten's spin. That way when chidori hits kaiten it creates a counter spin which stops kaiten and hit. YAY chidori wins.

If not then kaiten will win all the way =) HAHAHAHA