i didn't say that you were. however, you appeared to be taking exception to something that hadn't been said.
tyll is measuring headphone performance - not testing hearing acuity. he uses a standardised dummy head to take headphone measurements, and so do headphone manufacturers. obviously it's not possible for him or sennheiser for example, to customise their measurement rigs to measure your head and every other person's who dons a pair of cans, or to account for the countless variations in hearing perception between individuals. and as they are taken on different measurement rigs using different methodologies, there will be some varation in the results, but they usually look similar despite this. they should be regarded as indicative rather than absolute as i've said.
my point tho, is that there is a clear distinction between objective headphone measurements and subjective perception that is often conflated in this hobby. as i've also said, there is no requirement for anyone to like a can that measures well or to not enjoy a can that measures poorly. that is a matter of perception and taste, which is entirely subjective. a headphone graph can show you a can's fr for example, but it's not charting personal enjoyment. however, there are some head-fiers who are very skilled at interpreting the data and use it to vet cans.
i usually avoid analogies, but to dismiss objective measurements because they don't align with what you hear and like or don't like, is not dissimilar to disregarding a temperature gauge because the temperature feels different to you than what is indicated, or disagreeing with a speedometer because it indicates that you are travelling faster than you thought you were, or relying on your visual estimate of the length of a wall rather than a tape measure etc.
and yes, we are o/t and these discussions should be taken to the sound science forum.