Hock,
Great point.... Many instructors think that if they don't win all the time, then they are not going to be the man in their house anymore....
- Angelo Dundee couldn't have beaten Muhammed Ali, but he helped him become the champ.
- Cus D'Amato couldn't have beaten Mike Tyson, but he made him a better fighter... Look what happened when he passed away... Mike was still the same man, but without the guidance he took a downturn.
Same goes with any type of instructing / coaching endeavor.. In their prime it is a good chance most good instructors could rule the roost... But time and age catch us all.
I box, kickbox, stickfight, grapple, fight.. whatever with all my guys... I always get smacked, and I encourage them to take it to me.... I give it back.... How else do we improve?
We talk after the round or during, I tell them what they did good and bad, and they tell me the same... We try to fix it, and move on to the next event.
How can I improve, if no one pushes me?? The better they get, the harder it gets.... They get better and force me to take it up a notch, or be left behind.. This is the way it should be.
I am in my 40's, and not nearly as fast or strong as I once was, ( maybe a little meaner and trickier )

I still get by o.k.... But one of these days, It is gonna take too damn long to heal, hurt too damn much to train that way, and still teach 4+ hours a day, and I am gonna have to spend more time coaching than playing.... It is just the price we pay for being human.
It is not important that as instructors that we can dominate all of our students, or be the un-beatable one.... But it is important that we can help them improve, and become all they can be...
Just my .01.........
Dean.