Also interesting to note that the Cowboys are 2nd place regular season all time in winning percentage with 57.2% behind the Packers with 57.4%.
The Cowboys rode the #1 position for a few years after passing up the Chicago Bears, believe it or not. The Bears are now 4th place behind the Patriots who have obviously enjoyed a fast rise over the past 20 years. However, they were so terrible in the past that it took 19 consecutive winning seasons to reach 3rd place all time.
When the Cowboys lost to the Washington Whatevers on Thanksgiving day, 2020 and the Packers defeated the Bears the following Sunday, the Cowboys lost the lead.
Due to the fact that the Packers have played far more games than the Cowboys, each game in the future impacts the Cowboys percentage more than it does the Packers. When you are adding in additional wins and losses to a larger number, it makes less impact.
Anyway, the Cowboys are currently 4 games behind the Packers in NFL highest regular season winning percentage.
The history of NFL team's winning percentage is a direct reflection on the leagues attempt to even out talent with the draft and salary cap. In the 60's thee was a lot of separation in winning percentages among the teams, The difference between the team with the best record and worst record was about 30 percentage points. Now there is only 17 percentage points difference between first place Packers and last place Bucs with their 40.1% winning percentage.
Fifteen teams have an all time losing record including two from the NFC East, the Whatevers and the Eagles.
Tm Perc
Green Bay Packers 57.37%
Dallas Cowboys 57.17%
New England Patriots 56.28%
Chicago Bears 56.21%
Baltimore Ravens 56.01%
Miami Dolphins 55.28%
Minnesota Vikings 54.44%
San Francisco 49ers 54.21%
Kansas City Chiefs 54.11%
Pittsburgh Steelers 53.66%
Indianapolis Colts 53.03%
New York Giants 52.80%
Denver Broncos 52.72%
Las Vegas Raiders 52.35%
Seattle Seahawks 51.66%
Cleveland Browns 51.09%
Los Angeles Rams 50.81%
Los Angeles Chargers 49.89%
Washington Football Team 49.80%
Tennessee Titans 49.10%
Philadelphia Eagles 48.86%
Buffalo Bills 47.72%
Carolina Panthers 47.45%
New Orleans Saints 46.81%
Detroit Lions 45.09%
Cincinnati Bengals 44.83%
New York Jets 44.00%
Atlanta Falcons 43.77%
Houston Texans 43.30%
Arizona Cardinals 42.61%
Jacksonville Jaguars 41.57%
Tampa Bay Buccaneers 40.19%