Good point, and there’s a lot more parity in baseball, you really can’t spend your way to a title anymore, players are too expensive now.
I don’t even think it’s parity so much as the vicious grind. You get a similar thing in the NBA and NHL (well, outside the occasional NBA super team). The more games there are in a season the more records gravitate towards the middle. It’s just like the old coin toss experiment, the bigger your sample size the less your results deviate from 50-50. We never really like to admit how much luck plays into sports results. But in the end they’re really all about the bounces and the injuries.