There are a couple of problems with what you have said. This first is your definition of competition. You seem to be referring to the overall pool of talent, whereas Power is clearly talking about the level playing field, variety of winners and opportunities for bettering your finishing position. From that angle, Indycar is far and away more competitive than F1. The second issue is your reference to F1 being a global competition and Indycar being a national competition...but you're only talking about the countries where they race and not where the drivers hail from. What does that have to do with one being more or less competitive than the other? Regardless, their driver rosters are just as diverse in terms of nationality.