NFL Defensive Power Rankings

The AFC is getting all the love.  Almost every power ranking I've seen has way more AFC teams in the top 10 than the NFC teams. 

You have the Steelers, Ravens, and Jets all noted for their defense.  Well, what happens when we remove the points allowed and yards per game?  Points allowed isn't purely a defensive stat and neither are yards per game. 

Let's take a look at how the teams rank by adjusted yards allowed per play.  The adjusted is there because every take-a-way is close to about 40 yards.  So here are the top defenses in the NFL.

POS	Team	Plays	Yds/Game	Yards	INT	FUMB	Adj. Yds/Play
1	Chicago Bears	571	301.9	2717.1	14	10	3.08
2	New York Giants	510	270.2	2431.8	10	10	3.20
3	Pittsburgh Steelers	569	315.4	2838.6	11	10	3.51
4	Philadelphia Eagles	575	325	2925	16	5	3.63
5	New York Jets	570	306.7	2760.3	5	11	3.72
6	New Orleans Saints	523	277	2493	6	7	3.77
7	Green Bay Packers	576	326	2934	14	5	3.77
8	San Diego Chargers	532	274.7	2472.3	8	3	3.82
9	Tennessee Titans	617	350.8	3157.2	14	6	3.82
10	Carolina Panthers	594	326.8	2941.2	11	5	3.87
11	Cincinnati Bengals	557	329.3	2963.7	10	8	4.03
12	Oakland Raiders	544	309.6	2786.4	5	9	4.09
13	Detroit Lions	571	353.2	3178.8	9	11	4.17
14	St. Louis Rams	559	325.8	2932.2	8	7	4.17
15	Miami Dolphins	558	314.1	2826.9	6	5	4.28
16	Minnesota Vikings	549	310.8	2797.2	8	3	4.29
17	Baltimore Ravens	548	316.4	2847.6	8	4	4.32
18	Cleveland Browns	596	358.6	3227.4	10	6	4.34
19	Tampa Bay Buccaneers	558	353.8	3184.2	14	5	4.34
20	Indianapolis Colts	563	344.2	3097.8	9	7	4.37
21	San Francisco 49ers	573	331.4	2982.6	8	4	4.37
22	Atlanta Falcons	531	343.4	3090.6	14	5	4.39
23	Kansas City Chiefs	595	344.7	3102.3	7	5	4.41
24	Seattle Seahawks	616	376.9	3392.1	7	9	4.47
25	Arizona Cardinals	630	401.8	3616.2	10	8	4.60
26	Washington Redskins	628	415.3	3737.7	9	10	4.74
27	New England Patriots	604	390.8	3517.2	10	5	4.83
28	Dallas Cowboys	546	354	3186	7	6	4.88
29	Buffalo Bills	607	373.7	3363.3	2	6	5.01
30	Denver Broncos	578	372.9	3356.1	5	5	5.11
31	Jacksonville Jaguars	543	387.2	3484.8	8	4	5.53
32	Houston Texans	587	409.7	3687.3	5	3	5.74