Today, there are more varieties of cannabis around. Back then, there were maybe a dozen different ones, but it still had the same potential back then as it does today.

Indoor cannabis growing has evolved so much during the last 20 years. In the 70's, they didn't have the fertilizers, or the proper lighting to grow quality stuff. They didn't know about advanced techniques an getting better smoke.

HPS and MH lighting wasn't around for a good price. It was very expensive as it was something new, so inproper lighting will result in a low quality smoke.

So I think it was just as good back then as it is today. They didn't have the knowledge back then like they do today, so it was limited.