Did a little research. The 1972 Dolphins opponents had a combined winning percentage of 0.367. They only faced two teams with winning records during the regular season. The 8-6 Kansas City Chiefs and the 8-6 New York Giants. In their own division the Jets were 7-7, the Bills were 4-9, the Baltimore Colts were 5-9, and the Patriots were 3-11. Other AFC teams they faced. Chargers at 5-9, and the Houston Oilers at 1-13. In the NFC they faced the Rams at 4-9, and the Vikings at 7-7. Pretty easy schedule.
http://www.nfl.com/teams/schedule?te...seasonType=REG