I am 100% confident that if you resurrected Bruce Lee right now, restored him to his prime physical condition, and put him in a ring with me, I'd hurt him. I'm no badass, just a few years of Brazilian Jiu Jitsu and Boxing. I would toss this little chink around like he was my little brother. If he had equal experience/training to me, then we have a fight. The hard truth: the stuff Bruce Lee practiced, the stuff most people were practicing during his lifetime, is ineffective. What is effective: what MMA fighters do, MMA has been around as a sport long enough that all of the techniques that don't really work have sort of been "stripped out", and all of the stuff that does work *consistently* has been laser-sharpened. Kung Fu or "Jeet Kun Do" are not arts that have many actually practical techniques among them.