THC isn't the most important factor in what gets you high, it's turned into almost a marketing tool to sell stuff to stoners. There are so many cannabinoids that make the special sauce "special," it's only because the industry typically wants to see "THC/CBD" do we see the emphasis on that, when the reality is those other cannabinoids exist whether they are tested for or not, and those percentages we perceive (since they are so small) are not yet well understood as to how and why they provide the synergy that they do.
THC testing in itself is wildly inaccurate, there is no standard for testing (multiple ways to do it,) and the variances allowed are RIDICULOUS, on top of that, there is no standard for test samples either. You can pick the samples you send in for testing, that is SO fucking skewed lol.
I'm a consumer in Colorado, my medical dispensary, clone-only, photoperiod only, godly-genetic photoperiod bud, often will test out with over 10% variance allowed, right on the label. 18 to 28% bud. 13 to 23% bud. It's not possible (in my opinion based on the science) to produce a consistent THC level throughout the plant, no way, no how, just doesn't happen. THC should never be a static number for flower; that's BULLSHIT.