I think it’s fair to question the applicability of lab tests to outside conditions. That said, I do think there is some value in these results.
Example - for a race like Leadville (where grip is not as important as in an XC race), I would not choose a Maxxis tire as there are other brands with generally better (lab tested) rolling and puncture resistance.
I think the applicability of the tests on road bike tires from this website are better than MTB tires.