With the end of the NFL regular season, let's take a look at how competitive the NFL was this past season. I grabbed the NFL standings data from profootballreference, and then calculated the Noll-Scully measure of competitive balance. For those interested, here is a step-by-step guide to calculating the Noll-Scully Competitive Balance measure.
For this past season the Noll-Scully measure of competitive balance for the entire league was 1.445, and for the AFC the Noll-Scully was 1.364 and the NFC the Noll-Scully was 1.569.
Recent historical perspective on competitive balance in the NFL.