We have discussed this before. Packer's Ask Vic Column 
Historical Perspective 

Since 1978 the NFL Champion has had an average Passer rating differential of 23.3. Even after Aaron Rodgers worst game this season with a passer rating below 120, The Packers are in good shape. With a passer rating differential of 43.9, They are tied with the 1975 Steelers. They are still below the 1966 Packers (56.0) but ahead of the 1962 Packers (43.4), the 1996 Packers (40.3), the 1965 Packers (34.9), and the 2010 Packers (31.7).

You may not share my opinion that it is a quick way of coming up with a Power Rankings chart, but here are the season to date team Passer rating differential numbers.

Team Diff
GB 43.9
HOU 34.5
SF 19.8
NE 19.3
NO 17.8
PIT 17
DET 13.5
DAL 13.3
NYJ 12.1
BAL 11.6
NYG 10.4
OAK 2.2
TEN 0.2
CHI -0.4
ATL -0.4
MIA -1.6
CLE -2.5
BUF -3.9
CIN -4.9
SEA -5.7
KC -9.6
SD -9.8
AZ -11.1
CAR -12.3
DEN -12.8
WAS -15.6
STL -16.6
PHI -18.5
TB -19
JAC -25.6
MN -27.4
IND -37.4

What is so surprising is how bad some teames are!
There is a drop after the Packers and another after the Texans (who now have QB problems), then another drop after the Giants.
With so few good QB's it may explain why the rules protecting QB's is so important to the league.

**Edit now it let's me upload a spreadsheet**  Pass Diff 11.xlsx You have insufficient rights to see the content.

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Excel files uploaded.  2009Draft.xls You have insufficient rights to see the content.  MulitiplicationTable.xlsx You have insufficient rights to see the content.

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Somewhat surprised about the 1996 numbers.

Then again, Rodgers is putting up a 125.3 rating so far. That means that our defense is allowing opposing QBs a rating of 81,4, which is actually quite decent.

Favre managed "just" a 95.8 rating in 1996. The defense allowed a 55.5 rating to opposing QBs. That's absolutely amazing...

Just think of what this team could do if the defense actually played like last year and actually had a pass rush. We'd be as close to unstoppable as you can get in this league.

Good stuff, thought I would list the top teams and where they are currently seeded.

Top 6 NFC Teams

PRD Rank..TEAM....RECORD..PLAYOFF Seed
(01)........Packers......12-0...........01
(03)........49r's..........10-2...........02
(05)........Saints..........9-3...........03
(07)........Lions...........7-5...........07
(08)........Cowboys......7-5...........04
(11)........Giants..........6-6...........08


PRD Rank..TEAM....RECORD..PLAYOFF Seed

(02)........Texans.......9-3............03
(04)........Patriots......9-3............01
(06)........Steelers.....9-3............05
(09)........Jets............7-5............09
(10)........Ravens.......9-3............02
(12)........Raiders......7-5............08

Just a personal analysis, looks like The top 6 PRD teams have the best records, and except for Steelers have the top playoff seeds.

Ravens swept The Steelers so at this point Ravens have better playoff seed, that could change.

Pretty interestinG though that only 4 of the top 12 PRD teams, at this point, would miss the playoffs. All four are losing due to tie-breakers so things could change here also.

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