First, the guys are so much bigger, stronger and faster now that there is no way you can field a starting team the entire season and have any hope at being healthy enough to win the playoffs. Therefore if you were undefeated toward the end of the season you would want to rest some guys. The season is longer and parity is such a factor that the difference between the top 12 or 15 teams in the league is negligible.
Play was certainly much dirtier in 72 than it is now. Probably so much more so that it may compensate for the difference in size and speed now. But it seems that even steroidless guys now can put on so much muscle mass that they have as much a chance in pulling something as they do getting hurt on the field.
Ultimately, I'm just not too sure if it can ever be done. If Miami doesn't win one other game but beats Indy to ruin their chance at a perfect season, I'd be content this year. No Superbowl but the chance to beat both undefeateds and ruin their hopes.
Play was certainly much dirtier in 72 than it is now. Probably so much more so that it may compensate for the difference in size and speed now. But it seems that even steroidless guys now can put on so much muscle mass that they have as much a chance in pulling something as they do getting hurt on the field.
Ultimately, I'm just not too sure if it can ever be done. If Miami doesn't win one other game but beats Indy to ruin their chance at a perfect season, I'd be content this year. No Superbowl but the chance to beat both undefeateds and ruin their hopes.