Best NFL teams (16 game schedule)
To qualify the teams must have at least 13 regular season victories and have won the Super Bowl (sorry 1983 Redskins and 2001 Rams). Points scored and points allowed were not used in the calculation because this would be unfair to more defensive-oriented teams like the Giants but these numbers are included for your viewing pleasure. The rankings are heavily based upon opponent winning percentage so if a team played a lot of fluff it will hurt their ranking (ie 1999 Rams). More teams to come soon.

Note: If you don't like my selections. Tuff! Come up with your own mathematical formula.
Year Team Record Opponent Perc. Close Losses Combined Off/Def Normalize Quality Wins/Total Games Penalty Points Scored Points Allowed Average Victory Margin Ranking
1985 Chicago Bears
18-1
0.505
0
0.036
0.375
0
456
198
16.1
1.489
2004 New England Patriots
17-2
0.543
1
0.030
0.563
0
437
260
11.1
1.471
1991 Washington Redskins
17-2
0.519
2
0.034
0.500
0
485
224
16.3
1.469
1984 San Francisco 49ers
18-1
0.459
1
0.033
0.313
0
475
227
15.5
1.457
1986 NY Giants
17-2
0.514
2
0.031
0.375
0
371
236
8.4
1.453
1989 San Francisco 49ers
17-2
0.491
2
0.035
0.500
0
442
253
11.8
1.445
2003 New England Patriots
17-2
0.523
1
0.028
0.438
0
348
238
6.9
1.443
1978 Pittsburgh Steelers
17-2
0.488
2
0.032
0.375
0
356
195
10.1
1.430
1998 Denver Broncos
17-2
0.498
1
0.033
0.250
0
501
309
12.0
1.411
1990 NY Giants
16-3
0.543
2
0.028
0.438
0
335
211
7.8
1.398
1996 Green Bay Packers
16-3
0.533
1
0.035
0.250
0
456
210
15.4
1.364
1994 San Francisco 49ers
16-3
0.495
2
0.034
0.375
0
505
296
13.1
1.360


Congratulations to the 85 Bears, 04 Patriots, and the 91 Redskins. You were far and away the most complete teams to grace the NFL since the 16 game schedule was adopted in 1978.

Definitions


Opponent Perc is the opponent's combined winning percentage including playoffs.
Close losses mean how many losses a team had that were by 7 points or less.
Combined Off/Def Normalize is a grade given to each team based upon 8 statistical offensive and defensive categories. The maximum score awaded is 0.040.
Quality Wins is the percentage of regular season games that were played against teams with winning records (9-7 or better).
Penalties are given to teams for various reasons like having really easy schedules (0.450 opponent winning percentage or lower).
Ranking is the scored given out once all the computations are done. A higher score is better obviously.
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