Toran was unstoppable and would be the same today. The comparisons often are unfair since years ago there was not the same weight training and conditioning programs as today. Knowing dome of the players of the Burns era I can tell you that if they were available then and how the overall game has changed they would be just as good now as then. Nate Toran and his teammates came yo practice and games everyday ready to play.
Not taking anything away from Toran, but he's not getting 19 sacks against the schedule we played this year. Or last year. Or next year.
He could have had an amazing season, top 3 in the conference and top 10 nationally, with 12. As great an athlete and lineman as he was, his stats definitely benefited from the schedule in those years. If he were on the team today, he may still be one of our best linemen, but he wouldn't hold the top 3 years in the record book for sacks.
1974: Harvard (7-2), Hawaii (6-5), Princeton (4-4-1), Colgate (4-6), William and Mary (4-7), Air Force (2-9), and 5 non-IA teams (UConn, BU, Lehigh, Lafayette, Bucknell).
1975: Syracuse (6-5), Hawaii (6-5), Colgate (6-4), Princeton (4-5), Columbia (2-7), William and Mary (2-9), and 4 non-IA teams (UConn, BU, Lehigh, Lafayette).
1976: Colgate (8-2), Louisville (4-7), Navy (4-7), Columbia (3-6), Cornell (2-7), Princeton (2-7), Tulane (2-9), and 4 non-IA teams (UConn, UMass, Lehigh, Bucknell)
So, over three years and 33 games, just 6 Div-IA teams that finished with a winning record (and only 3 of those are FBS programs today)... and 13 teams that were non-IA.
It was a different era. We were basically an FCS team playing what amounted to a Patriot/Ivy League schedule. It's really not possible to compare the 70s with today in terms of statistics.