Whether Bruce Lee has a chance against a predator depends on which representation of the predator is thrown against him.
If Bruce Lee has a blade, he probably has a decent chance against the likes of Falconer (arguably the weakest, least durable predator on screen).
Against Wolf, City Hunter, Jungle Hunter, or one of the AvP1 preds, Lee would be physically outclassed by a ridiculous margin. His only chance of winning would be through trickery (for example, playing possum a la Danny Glover).
Against a skilled predator of the EU (a predator like Dachande or Smiley), Lee has zero chance. We're talking about a predator who has the reflexes and speed to engage a dozen xenomorphs in melee at once, the skill to solo an alien queen. Lee gets ROFLSTOMPED by this kind of predator.
Of course, if there's a high-end, there's a low-end, even in the generally wanked out EU. There's that predator who couldn't defeat a mother bear protecting her cubs. Lee might have a good chance against that one.