While I cannot vouch for the individuals you mentioned, I am familiar with Randy Cheap Audio Man. From my observation, he does not conduct tests, but rather sells his opinions on Youtube in a conversational manner, often suggesting to his audience to "grab a cup of coffee." Unfortunately, he lacks scientific evidence to support his opinion. I do not intend to criticize him as a person, but when it comes to the science of audio, he falls short of credibility. In simpler terms, he sounds like a communication major who has no understanding of audio science. Like most of those types, it's just his subjective opinion.
I remember his 08 review on Youtube, saying he thought it was a little hot in the higher frequencies, which is what Amir's tests show. Yeah, Randy, you can hear .4 dB at 10kHz and 1dB at 20. Riiiiight. "Grab a cup of coffee," indeed.
My suggestion is to ignore anything anyone says about anything, unless it's backed up by science. Sure, if they say it sounds great, and you can get a near consensus, it's probably decent enough. But anything greater than a general listening opinion is really just an open cakehole spraying frosting.