The whole high THC thing seems to have become more of a marketing idea. I can't say that it's a bad idea because I know it works to attract people to those products that claim the highest levels.
But, like I say, IN REALITY, there isn'y a really big difference.
I know I told this story before on other threads, but I remember when I first got my medical card....I went crazy buying 2 gram samples of everything I could find....I got caught up in the hype and started to believe I was smoking some elite shit that no street weed could come close to.....But, as time passed, I wasn't getting any higher than I had always been getting -even when I was buying street bunk weed.
One day, I saw a friend in an illegal state and he had some "blueberry" that he had been getting from a grower for years and years...I took a couple pulls off that joint and
it sat me down! Not only that, it was the most tasty blueberry skunk weed taste that I had in some time -and had been unable to find anywhere on the medical/commercial scene!
I can't say that that blueberry strain of his wasn't really high THC, too....but I doubt it was. My thought is that it was just a strain that had managed to escape the ravages of hybridization and, instead, offered some "missing" thing from the past that we just haven't figured out...yet.
My guess is terpene profile in conjunction with the THC and other cannabinoids is going to be a better indicator of quality and effect in the future.