This is interesting, but needs to be viewed cautiously. Some teams will be hit harder by free agent losses than others. For instance, the Mets could lose Jose Reyes, which would have a huge effect on their offense going into next season. The same obviously goes for teams like the Brewers and Cardinals too, with Prince Fielder and Albert Pujols testing the market.
Some teams could bounce back quickly if their key players stay healthy, like the Twins. It's one part of the equation, but the teams that fell the furthest will be looking for offense.