That’s because, after the test is completed, the option to pay a little more and have the test result published is offered to the customer. And as
@exploitedworkerbee pointed out (on another forum), that leads to cherry picking results. Have you ever noticed that there are only good test results on the public page of Jano’s website?
I would argue that right now, until that policy changes, the Jano site is one of the worst places to look for sources because you’re only going to find results that the vendors want you to find.