Edwin Pawlowski writes:

That tag though, does give me some idea that A is better than B.

Exactly: it gives you that idea. An untested, unproven idea that plausibly
could be the inverse of the truth.

The function of the tag is to sell refrigerators and provide cover for the
government. No doors, no contents, no ice. A schoolboy doing a science
fair project would come up with a better test.