I try to look at these things within the context of the times. Meaning if the 72 dolphins had all of the modern advantages, they beat the Jags. So in my mind, they are the better team.
But yea, the actual 72 dolphins would be crushed. it would be sad to see.
The 27 Yankees is an interesting argument, though. Baseball is a little different. I would think Babe Ruth and Lou Gehrig are probably HOF level players today. Yes, their numbers wouldn't be as ridiculous as they were due to minorities playing, reliever specialization, night games, etc, but hitting a baseball is something you can either do, or you can't.
There used to be a baseball podcast hosted by two scouting experts that got into this question a couple times, one of whom recently took a job as chief of pro scouting for the Astros. These guys obviously weren't around in the 1920s, but they'd been deeply involved in the game for at least 10-15 years and spoke with countless scouts, some of who actually were around back in the 50s.
They both had no doubt that even the stars of the 50s and 60s would get laughed off the field today. There's just been too many advances, some of which we don't even stop to think about. Players start younger, specialize younger, have greater access to elite competition in their youth due to the relative ease of traveling around the country, have about a million times better access to film study to improve technique and preparation, etc. Plus the salaries now ensure that the pool of prospective athletes that the elites come from is way, way bigger, which means the pros are better too (think of pulling the 5 best looking swimsuit models from a group of 500 college girls vs. a group of 50,000 and you'll get the basic idea).
