First, I took karate for about 3 years when I was younger. That doesn't mean jack, however
I can tell you first hand, how powerful/stronger someone is doesn't mean that much depending on what type of fight you are in or what style you are learning. For instance, things like judo where you use the person's weight against them. I mean geez, if it's no holds-barred, it's just like in "Road House", you crack someone in the side of the knee, and there are VERY few people in this world that aren't going to go down. Then, as Homer Simpson so amptly put it, "Kick 'em in the ribs, step on their neck, and run like hell". 🙂
That being said, I don't think you all realize just how strong Bruce Lee was for his size.
There were several articles in Ironman Magazine (bodybuilding mag) a few years back that detailed the training regimen that Lee used to do. The man was a freakin' animal for his size. He was about as ripped as a person can be hovering around 1-2% bodyfat ALL THE TIME. He would often workout with 135 lbs. on curls. That's a pretty descent feat for most people, but considering Lee himself only weighed in around 120, that is freakin' unbelievable.
A few of you stated that once a grappler like Karelin got a hold of him, that might be a different story. But like another guy said, I don't think that would ever happen. Lee's movements were like lightening. Have you ever seen that famous seen where he is twirling the numbchucks? The guy had the most unbelievalbe hand-eye coordination I've ever seen. Lee would be like a hummingbird flying in and out and landing strike after strike on an someone like Karelin. It's the same thing with the Muhammad Ali-Tyson debate I hear from time to time. People always say, well hell, if Tyson ever landed a few good punches or an uppercut, Ali would be down for the count. Well that's fine, but it would never happen. Ali was just like Bruce Lee, faster than shiznit. Tyson would have never touched him. What the hell does size and power do when you get hit 7 times before you know what is happening??!!! Ali would have destroyed Tyson. To tell you the truth, even if Tyson could hit him, I still think Ali would win. The man fought wars in the ring.
So to sum it up, Bruce Lee had some wicked, mad-azz skills and would have owned Norris or Van Damme's azz!!!!
Course, that's just my $.02, don't pay much attention to it 🙂