I can certainly believe that. I'm a long way from perfect sighted, but I am apparently close to the average once corrected. The fact remains though that the pixel density is comparable to phones released a couple of years ago, and the distance between 'retina' and 'non-retina' is mere inches.

It is the old audiophile argument I guess, we'll never know for sure without double blind testing. I would like to give that a trial, sit people at 10" from a black mask screen with a small rectangle in it, display a pure white image at the lowest brightness and see what people report.