I pick both, because "At the age of 17, Jackie Chan worked as a stuntman in the Bruce Lee films Fist of Fury and Enter the Dragon under the stage name Chan Yuen Lung (Chinese: 陳元龍)." Without Bruce there maybe would not have been a Jackie. Yet, Jackie has worked hard to win the respect that Bruce always wanted for Chinese-American actors.
I guess I totally admire Bruce Lee, his courage, his endurance, his vision, but I also just love Jackie. He, too, has courage and tenacity. He is warm and funny and hard-working. Both men are great artists in their own right and I don't think I could ever choose one over the other, so I pick both.
They're both incredible. For all the reasons people have said so far. But maybe cause I'm more of a goofball myself I ultimately gravitate more towards Jackie Chan. He seems sweet and humourous, but he's still an undeniable badass. Bruce Lee, though. Man. With his talent and philosophy...he's unparalleled.
Bruce Lee, his changing the flow of his movies with quick wins over minions and longer fights with the arch villain (with improved story lines) helped to raise the standards of the martial art films of the day.