If you want to get accurate measurement of these headphones or any other product. Get the mean result of not less than 10 headphones of the same model. Do them how manufacturers test products, if you need a hundred to prove its consistency, then do it. Test them with the ACQUA system and HMS head and torso simulator or any system that can bring you more accurate results, not a hearsay of speculations and conjectures, that way you can cancel out the percentage error in manufacturing such as human assembly error, ear pad sizing, etc.
Just like burned-in and break-in. A sound can be burned-in to a person's memory; therefore, we start getting used to that sound and it becomes likeable over time. Same with eating exotic food, our tongue needs to adjust to the taste. And, the human brain is also capable of dictating something that we are pre-meditated with. If we are pre-meditated that this new product is better, then it becomes better because our brain dictates it.
Pre-meditation tricks our senses, that's why we need to be objective with the results and break it down with the smallest percentage error. Test products without seeing the graphs and the data first, that way you can cross-reference your initial assessment with the data, after. Do your initial reviews without reading other reviews, then see if they match.
This doesn't mean jack to the normal reader.
Instead, that is, instead of objective skeptic conjecture and technicalities [ Pleading the placebo as well], please go out and do it yourself.
I for one believe more in results; it would bode well for you to back up your own claims instead of striking down others who hear a "difference".
Just my two cents.