The Cowboys were still highly successful, and with just a break or two could have beat Pittsburg in one of those Super Bowls in the 1970's, and they would have been considered the team of the decade.
For me personally, I enjoyed the game more back then, but keep in mind I was watching the game through different eyes at the time.
First game I recall watching all the way through was the 1971 Super Bowl between the Cowboys and Colts (1970 season). The 1970's were when my love of the NFL started, and particularly my love of the Cowboys. I watched at that time through the eyes of a young fan who was totally wrapped up in the team, and who was not yet aware of any of the downside of pro football.
Of course, the fact they were consistently a SB contender in those days also made it fun.