The United States debatably has the most athletic population of an country and its the top sport in America where we funnel all of our talent (probably to our detriment). Regardless of the popularity abroad its where our athletes go.

When we do compete in other sports we fair above average to exceptional (https://en.wikipedia.org/wiki/All-time_Olympic_Games_medal_t...) with the notable exception of soccer, which we've never broken through despite investment and a decent population of players.

Don't kid yourself, just because other countries don't play American Football doesn't mean the players aren't freak athletes - they are

It’s not the #1 sport there, but NFL football is popular in Canada too. To me, it’s dominance in North America is enough to qualify but I respect your position.