Bloodsport Proof: Frank Dux his Kumite? Footage! Dux Ryu Ninjitsu

Is this footage where you see Shidoshi Frank Dux actual fighting the real thing? Is this proof for bloodsport? And the whole Frank Dux story? Dux Ryu Ninjitsu founder Frank Dux said that he was trained by a Japanese ninjutsu master: Senzo Tiger Tanaka in the Tanaka Clan Ryu of ninjutsu. Frank Dux called his martial art : Koga Yamabushi Ryu Ninjutsu. This is the question: Is this real ?