Actually, in terms of impact on pro football, you could make a strong case that The Baltimore Colts played in two of the most important games in NFL history in terms of what it meant to the growth of the NFL, and the impact it had on the NFL.
The 1958 Championship game was the first ever televised by the DuMont network to a national audience. The drama of the overtime win took the NFL to the next level and set the stage for the modern TV contracts they now enjoy
The 1968 AFL-NFL World Championship game (It wasn't OFFICIALLY the Super Bowl, wasn't printed on the tickets) played in January 1969, and won by the AFL NY Jets proved that the AFL had risen to a level of parity with the older NFL.
That game set the stage for the merger which was officially announced in May of 1969.