In actual fact, studies have been done whereby sports athletes with greater levels of practice were asked to play less accomplished opponents whilst carrying out a simultaneous task unrelated to the sport (foot tapping X times in a minute, mental calculations) etc.
Even under a completely new cognitive load the atheltes were so well drilled in their sport they consistently beat amateurs who were focusing on nothing except trying to win.
Soldiers can do similar feats regarding drill and drivers do similar feats constantly. An accomplished driver can navigate a busy and hazardous environment whilst listening to music and daydreaming whilst a newer driver will struggle even if solely concentrating.
People who practice less very very rarely ever beat those more practiced and even then environmental factors are likely playing a massive part.
Once again, native attributes are largely myth. Barring disability almost all humans start on a relatively level biological playing field. The true modifier is self determination and environment.