Only in NY is a championship necessary. They have to justify spending $200 million on players.
In Boston, everybody wants a championship, but realistically, it doesn't happen every year. Everything has to fall in place, especially injuries, and that hasn't happened for them so far this year. A lot of it is timing--you want to max out in October. Don't leave your game in July or August. Maybe the Yankees will have that problem this year. Right now, they are almost unbeatable. But can they sustain it? Hard to do.
Look at what's happening in the NL. The Dodgers started strong but may have peaked. They just added a couple of veterans, showing they think they need help. Manny has come down to earth--no juice? The Phillies are the team to beat in the NL. And maybe the team to beat for the Championship. The big market-oriented media wants a Dodgers-Yankees WS, but they might not get it.
The Angels? The Red Sox seem to have their number in the playoffs. Kazmir? Won't help much against Boston. The guys that kill the Sox are Garza and Sonnenstine. They can't hit those guys. They are the main reasons TB gives them so much trouble. Not having to face them in the playoffs is a big boost for Boston.