This was going to be my post. Tony saved me some typing.2) The "sparring" in that video could better be termed "semi-resisted free form training." You'll notice that the "defender" always wins. That's because the "attacker" is deliberately not using his skills to anticipate or counter his opponent's techniques. Instead he just keeps attacking blindly until he is taken down. There can be some utility to that sort of training, but it is not sparring.