Let me rePhrase it.
“How can I tell the difference between your story and a fable?”
How would I know whether it is true and a real thing or a psychological thing, or even just a story.
This is the essence of chat rooms and the internet. Of all the stuff you read how do you filter out what is relevant to you. In my opinion measurements of a product are a poor indicator to whether or not you will like it. A good indicator is customer reviews. Look at the opinions of people who bought it. I am NOT a believer in the blind test unless you have a panel of trained listeners and the proper setup. I am a BIG believer in the customer knowing if something is good or bad. If you want to know if product X walks the walk check Amazon, Crutchfield, Audio Advice, Sweetwater, Guitar Center, etc. for customer reviews. Then check the forums and some professional reviews. Then audition it by leaving it in your system for a few weeks and see what happens when you take it out.
If there was one measurement that was universally best for everyone every manufacturer would produce their gear to fit that measurement in order to compete. I wish that were true but it just isn’t.