One method that I find very easy to use to evaluate adequacy concerns is "level of play". If you look at different games or different leagues of the same game, it's pretty apparent that the "level of play" - the amount of athleticism, effort, skill, planning, strategy, etc. that is on display - is quite different.

For instance, in the United States the NFL is operating at a higher level of play than college football. Similarly, baseball in the United States operates at a higher level of play than baseball in Japan, and both are significantly elevated compared to the rest of the world. In South Korea, Starcraft is treated as a professional sport.