So, how come the teams all bombed out if the play-offs?
baseball is a high variance sport. Look at the win percentages of the NBA where it can be in the 70-75% range whereas the best best best best best best best teams in baseball MIGHT be .600 in a given year IF they are lucky and everything goes right.
Additionally, short series are the great equalizer for crappier teams. Longer series you are going to need to have the depth to pull off a win, but even a crappy team with just two good starting pitchers will be able to hold their own because the series is so short.