I test a lot of products that don't do well. Some manufacturers like Benchmark contact me, send me a second unit and help resolve the issue. Some don't care or don't know. In latter cases, it is assumed it is not an issue for them.
The least costly path by the way is for the manufacturer to run the same tests and publish them. Since my analyzer is industry standard, there is good chance they have similar units and we can help resolve differences. Unlike magazine reviews, my tests are interactive and I am happy to continue to test and help get to final answer. That is what I say at the end of every review.
Until then, yes, it is a sample of one. It is the nature of reviews of expensive products that we test only a single sample. If you or someone else owns the same unit, feel free to send it to me and I will test that.
Finally, I want to make sure you know that this is not "abnormal results." What is there is switching amplifier noise that is too close to audible band. This is the nature of the design. It is alarming to people maybe because until now, they did not know this since no one had measured any units. I consider the results disappointing but not abnormal.