I'm saying that creating a premium product cannot be distilled down to one feature/dimension/characteristic and it's a fruitless task to just ask people on the internet to do it for you.
1) Many people can't specifically identify and articulate which characteristics lead them to prefer one product over another.
2) Many people have different reasons for preferring the same product over the same alternative
3) An individual is probably preferring a set of characteristics that overdetermines their preference (i.e. if you remove one of the set, their preference still doesn't change) and the set is comprised of individually not-very-important characteristics.
Would you be confused if someone said that they prefer a Porsche Panamera over a Honda Civic? They could probably say they prefer the size of the Panamera, but that's clearly not sufficient explanation because they also would prefer it over a CR-V. Then they'd say the materials used are better. But would they now accept a CR-V with the interior redone in ultra-premium materials? Very unlikely.
The reality is that their preference is a complex mixture of things that they struggle to even detect never mind articulate. "Good product companies" get this, and bad product companies just stare in befuddlement at why their CR-V with fancy leather isn't outcompeting Porsche. Of course when you ask someone to explain their preference, they cannot. They don't have the language to describe it! It's a silly question to even ask!