There are many things it could mean. That is typical with the word "get". It means whatever the speaker wants it to mean, within limits. We can only guess what the fellow means. The more context we have, the more confident we can be that our interpretation is the intended one. My own personal interpretation is "It is your destiny to be good at real sports. It is my destiny to be good at fake ones." but I do not claim my interpretation to be any better than anyone else's.

If “get to” be/do something, it is a positive thing. Consider these sentences, said by a small child: “I am going to the candy store after school.” “I get to go to the candy store after school.” The first sentence is more descriptive and neutral. The second sentence emphasizes the privilege or pleasure of going to the candy store—the child has been given an opportunity! (By the way, I can tell that you are serious about learning English. Feel free to message me if you would like to practice writing, speaking, or listening English for free!)

'Get to' has several uses. For me, there are two possible interpretations here. Get to = eventually become. Get to = have the chance to. Because of their different experiences, one person eventually becomes good at real sports and the other eventually becomes good at fake ones. Or, again because of their different experiences, one person has the chance to be good at real sports and the other has the chance to be good at fake ones. Both work.