I put together a special version of the team stat visualization for the playoff field. It's a good, quick way to get a feel for how each contender compares on offense and defense, in the passing game and in the running game. The first three tabs depict the three key team stats: EPA, WPA, and SR. Two additional tabs break out run and pass EPA production.
What might be particularly useful is the week selector slider. It's handy for isolating recent trends or for isolating subsets of games, such as GB's games with and without a healthy Aaron Rodgers.
The dashed average lines for each stat represent the 2013 overall league average, not just the playoff field. Here's a version below, but a larger version can be found here.