It still can be heavily impacted by cultural component. Cultures that have heavy focus on football have more top football players, regions that emphasise fighter culture and invest a lot in wrestling sports have top wrestlers in the Olympic games. Cultures that practice running and have running as their top preference will focus on running and encourage this skill through training, financially and by trying to seek the people who have good characteristically for running through screenings. A person living overseas will still be at least somewhat impacted by their country of origin or by their culture through their family and identity. Natural advantage would mean little with no training, financial support or cultural encouragement.