Depends what you mean by parity. Only one team has won two championships in the last decade. The playoffs, particularly in baseball, create parity. The regular season is a different story.
Fair point. I erase all recollection of playoffs that don't result in Yankee victory.
But I think a small market team with relatively few idiots has a better chance than a massive team filled from top to bottom with idiots.
Agreed - need to look no further than the Rays and Mets for examples of each of those.