Beyond strictly looking at wins and losses, DVOA by Football Outsiders gives a clear picture of team performance.
The following Infographic shows the past 10 years of DVOA rankings (2008-2017) for the Pittsburgh Steelers.
If you extend this out to 45 years, there would similarly be many more years in the top-10 than in the middle or bottom-10.
Ten-Year DVOA Rankings: Arizona Cardinals, Atlanta Falcons, Baltimore Ravens, Buffalo Bills, Carolina Panthers, Chicago Bears, Cincinnati Bengals, Cleveland Browns, Dallas Cowboys, Denver Broncos, Detroit Lions, Green Bay Packers, Houston Texans, Indianapolis Colts, Jacksonville Jaguars, Kansas City Chiefs, Los Angeles Chargers, Los Angeles Rams, Miami Dolphins, Minnesota Vikings, New England Patriots, New Orleans Saints, New York Giants, New York Jets, Oakland Raiders, Philadelphia Eagles, San Francisco 49ers, Seattle Seahawks, Tampa Bay Buccaneers, Tennessee Titans, Washington Redskins