The Baltimore Colts were one of the most dominant teams in the history of football during the 1968 season.
The Colts, led by head coach Don Shula, outscored their opponents by an average of 18 points per game, and they avenged their only loss of the season by beating the Browns 34-0 on their road to Super Bowl 3. Johnny Unitas was injured, but Earl Morrall took over at quarterback and won the league MVP award that season.
The NFL was considered to be a far superior league to the AFL, and that’s part of the reason why the Colts were 18-point favorites over the Jets.