Stacking up the NFL playoff field

Won-lost records and seeding do a decent job setting expectations for NFL playoff matchups, but they take us only so far. Teams with the same records can be very different in important ways. Some are much stronger on one side of the ball than the other, creating imbalances that become part of their DNA. The Dallas Cowboys are a prime example this season, and after taking an initial look at them in the fourth of my 10 takeaways from Week 17, I'm back with a look at all 12 playoff teams.