Or it's because certain people excel in different sports than others? Do you really think that anybody from the NFL, Soccer, Basketball, etc, could come over and be a great fighter?
Being a good fighter doesn't always have to do with being the best athlete. Fighting is the rawest and most pure form of sport out there. It's the most emotional and physically demanding thing you can do as a career. Being the best fighter in the world or even top 5 is not easy to do just like it's not easy to get into the big leagues of other team sports, but fighting requires a different kind of ability besides just athletic ability. We've seen quite a few former NFL guys try their hand at MMA and they fucking sucked even though they were trying for many years.
People are better in certain sports than others. I love how a lot of idiots here shit on MMA fighters and talk about how they couldn't make it in any other sport when in reality it has nothing to do with that. Maybe it's because these people love martial arts and enjoy fighting because they enjoy the competition (not hurting anybody, but competing to be the best, make sense?). Some of you guys really have no idea what you're talking about and are just unrealistic about pretty much everything. Some people are just better than others at certain things. These guys/girls pursued being an MMA fighter, they didn't end up there by accident. They chose this career and it's not because they couldn't make it in a different sport, it's because this is the sport they enjoy more than anything else.
If you love something so much and put your mind to it, you put everything to it, there's a chance of success. They wanted to be fighters. If they wanted to be in some other sport, odds are they would still be trying to do that. You don't become a fighter by accident. You work for this shit and you work VERY fucking hard. Most of you wouldn't know that though because you're disrespectful little cunts that don't know anything about fighting or what these people do to get to where they are in such a brutal sport. Most of you would quit the gym after one fucking beating out of embarrassment. Very few of you would ever get in the cage. Shut up.