Batty67,
Not sure which Canes team you saw, but we have watched their top team play a hundred or more games over the past few years. What would be rare is when you see one of their pitchers that doesn't throw 90 or better. So if you didn't see anyone throwing 90, I would assume you didn't see their top team.
I realize there are more high school pitchers throwing 79-80 than those throwing 90 or better. But there are a lot of HS pItchers throwing in the 90s these days. A couple years ago an old scouting buddy of mine said his organization had turned in more college and HS pitchers that had touched 96 that year than the previous 10 years combined.
I spent several years coaching in small college. We never had a pitcher that topped out in the 70s. We did have some low 80s to mid 80s guys and a few upper 80 guys and two 90+ guys, one that topped out at 96. BTW, both of the 90+ guys ended up pitching in the Big Leagues.
I suppose if you are talking about the very lowest level of college baseball, you might see a lot of 70 mph types. But our BP pitcher threw 65-70 most of the time when guys wanted it a little quicker and that was from short distance. 12 year old Little League kids are throwing in the 60s, some much higher.
I will admit that I have seen very good pitchers that don't throw harder than upper70s or 80. Most of them throw from a very low slot. But I would be surprised to watch nearly any college game and see everyone throwing below 80 mph. Not saying it doesn't happen.