I am far from the best, but i am probably the best on jun fan JKD on this Forum.
With this in mind I would say that what i see on other clips is nothing but MMA, Grappling, Muay thai using bruce lee´s JKD title to market themselves. what i see is simply MMA, Muay thai and whatever performed brilliantly. bUT I WANT TO STRESS THAT THIS DOES NOT MAKE IT jkd. jkd IS NOT WHATEVER YOU WANT, JUST BECAUSE YOU ARE INSPIRED BY BRUCE LEE.
As far as paul vunak. i love the Guy. i love his martial art. bruce lee said. Do nor cross yout feet, Stay with the On guard, do not open you groin area, do not switch Leads, stay wirth Strong Side forward. In my oppinion Paul is also Brilliant, but he is also brilliantly doing everything this, and therefore i would not label what he is doing JKD.
Bruce Lee said
"All JKD techniques starts and ends in the On Guard" just look at all these clips and you will see that they are only demonstrating goog kali, goog MMA, good Muay thai and whatever. They arebreaking too many JKK principles to call what they are doing JKD.
JKD IS NOT SIMPLY DOING WHATEVER YOU WANT, howeever briliantly it can be done!
/SteFan