Bruce Lee was, amongst other things, a real fighter. He had dozens of streetfights before he was famous, many with guys a lot bigger than him. Even after he got famous he was still having to put down challenges, like this one:
Bob Wall, USPK karate champion and Lee's co-star in Enter the Dragon, recalled one encounter that transpired after a film extra kept taunting Lee. The extra yelled that Lee was "a movie star, not a martial artist," that he "wasn't much of a fighter". Lee answered his taunts by asking him to jump down from the wall he was sitting on. Wall described Lee's opponent as "a gang-banger type of guy from Hong Kong," a "damned good martial artist," and observed that he was fast, strong, and bigger than Bruce.
This kid was good. He was strong and fast, and he was really trying to punch Bruce's brains in. But Bruce just methodically took him apart. Bruce kept moving so well, this kid couldn't touch him...then all of a sudden, Bruce got him and rammed his
with the wall and swept him up, proceeding to drop him and plant his knee into his opponent's chest, locked his arm out straight, and nailed him in the face repeatedly". – Bob Wall
Statham never had a fight in his life, as far as I know.
It would last 10 seconds or less.