At the end of the day, the general public chooses UFC. In North America, it's much cooler to be an MMA fighter than it is to be a boxer. The boxer is no longer considered the baddest man on the planet: that's now the MMA fighter.

And it's only expanding. MMA is gaining big popularity in Europe, especially England where it always draws big numbers. And with more and more European stars emerging, the popularity is only going to go up.

MMA is in a constant state of steady growth. What's boxing doing? Two of boxing's biggest draws are probably going to be retired within the next few years. Mayweather is likely going to try to hit 50-0 and leave. Pac is past his prime.