The "evidence" should be treated as a claim because the product being tested and the results can be easily manipulated. Representing fraudulent data as legitimate is just as harmful as suppressing valid data, for both the vendor and consumer. I'm in favor of testing but there are limitations to tests results.
I agree this should be treated as a claim, and the possibility of fraudulent or erroneous test results should be considered. The trouble is K has no idea whether the tests I did are correct, because he neither tested them himself nor retained samples against future claims. So it's the ONLY data he's going to get other than blood tests and subjective evaluations, and neither is better than or even as good as labmax for the products in question.