When buying anything, an individual will only check out the specs/features that matter to them - I doubt they would check out every single measured specification. I would presume most people would look at fuel consumption (except maybe those with a few bob in the bank who are possibly buying a status symbol.
It doesn't matter how neutral you make your speakers - they can be as accurate as you like, but if the buyers don't like the look of them, they're staying in the showroom. And you can't blame people for that, nor any other reason why they choose a product. It is their money, and while you can make recommendations, they will spend it how they like.