I have plenty of respect for Bruce Lee, I've visited his grave on his birthday (actually I didnt know it was his bday that day) and I am a big fan. However, Bruce was far from unbeatable. He's Martial Arts skill are displayed in movies in a very controlled and organized way. In a street fight all of the fancy moves goes out the window and Bruce would use weapons and a lot of running away.

He was about 5'7 140lbs. He was strong but many Asians that size are strong too if they do martial arts. Tyson would grab him and it would be tough for Bruce to take any shots from Tyson.