For me it's partly population size, but also like... Culture/global impact i guess? Rio/Sao Paulo are some of the biggest cities in the world, and a part of one of the biggest countries in the world, and they're both "brand recognizable" names.
Beunos Aires, Toronto, Chicago, Huston, Havana and maybe more in Mexico/South America I can't think of off the top of my head will round out the top 10ish
I am incredibly competitive, and funny enough I get it from my mom. I remember really having to learn how to control myself growing up, crying at mini golf because I'm 8 and sucked lol.
The rest of our family has banned us from competing against each other after she spiked the Wii remote into the ground from playing Mario Kart against me.
We try and do more cooperative activities now a days lol.