“I think Tarantino was just having fun and subtly tells the audience that this is a fictionalized version of Bruce, not anything like the real deal. The one thing that the real Bruce said about Muhammad Ali is that Ali would beat him in a fight. How does the scene open? With “Bruce” bragging about how he would paste Ali. Tarantino is way too geeky about movies, including martial arts movies, not to make that specific reference purposefully. It tells you that what follows is fiction.”