There are other greats that tought him like Yamaguchi who also was a referance James Mitose sent his student Anton Krucky to.I will not say whos better but,I will say I have a nice video archives showing founders like Kono-Yamaguchi-Funakoshi-Chen Man Ching-Lee Ang-Bruce Lee-High Dang Fashu-Willie Wetzel-Antonio Illistrisimo-E Ellistrisimo-Subing Subing-Pedoy & many more greats.The films I have are good history & show for that moment what was.Gives some persccetive to as to per say a book.You dont see or know how they got from 1 to another move,other then guess.The videos show me if the have power-skills-timing-teaching abilities-history-and who they are.1 film I have is ninja by Ashida Kim Auther of many books.Seeing him act out a green hornet sceen-then dodge sound effect bullets & strugle trying to dis arm a gun.Show me a con & he made some money till he claimed KOGA NINJA which came orig from Korea & I had a rank in.I will say this -ninja is good for in & out or spy type.Ninja is good if you know some type of hand to hand-multi wepons ect.I personly like the philippino arts as arnis a lone deploys over 100 wepons & empty hand.