I think they like to dissect a team that has a record like the Yankees. As the team that has the most titles, some prejudice could exist and I think commentators might have a hard time hiding that. They surely have their own favorites. It's a strategy the people often use as a way of leveling the playing field by picking a top opponent apart. You might also consider where the channel has its broadcast center - where its home office is - that would definitely have an impact. I do think the Yankees tick off a lot of people - people who wish they didn't have the stature they have.