Great Dayne
I was right even if you believe I was wrong
Did you read my post, at all? It was much tougher to make the NCAA Tournament back then, and the ACC was a monster.
A couple of additional points:
1.) I don't have a precise date, but the NCAA Tournament didn't become as big of a deal as it is now until sometime in the 1950s.
2.) I made this point before but since you completely ignored it, I'll make it again. Only the conference champion got a bid to the NCAA Tournament until 1975. From 1975 to 1980, only the top two teams from each conference got to go. Duke had to deal with UNC's Dean Smith, UNC's Frank McGuire, NCSU's Norm Sloan (aka, the guy that ENDED UCLA's national title streak), NCSU's Everett Case (the guy that practically invented basketball in the state of North Carolina). South Carolina also become a big threat when they hired McGuire in the late 60s, early 70s. Wake under Bones McKinney and Murray Greason were a threat as well. Maryland had Bud McKillian, who was solid.
3.) Pre-K, UNC had 7 Sweet 16's, while Duke had 6. By 1980, UNC had been coached by two members of the CBB HOF (for their contributions as coaches) for a total of 30+ seasons.
4.) I'm not debating that Duke, pre-K, is the Duke of today. My entire argument is that Duke has legitimately always been good at basketball, with the exception of the early 70s. Expecting them to go away once K retires is quite naive.
No matter how you slice it 12 years straight from the late 60's and 70's with making no NCAA appearances is bad yet you called them a great team before coach K. Since 1950 they had 5 sweet 16 appearances which is 1 appearance out of every 6 years. That's awful even if it was more "difficult" as you say.
They had several nice years but never had a string of consistent final four teams. At the very least you can accept the fact that this wasn't a great basketball program before coach K. You're the first person I've ever seen say that.