'Quality' can be very subjective. For instance:
People like having things read to them in different ways. Some listeners like it when the reader puts on voices and accents to portray the various characters, while others prefer a 'straight' reading.
One person may find a particular timbre of voice unattractive, while another loves it.
Some people dislike accents from other parts of the world, and only like to listen to familiar accents. Or they like to have the accent match the material, e.g. Jane Austen read with a British accent and Joseph Conrad with an American accent.
I agree!We cannot start judging recordings on subjective things like accent and reading style -- we simply cannot. There is no accepted norm for these things. There is no one way of reading that is pleasing to everyone. For every listener who likes slow deliberate readings, there is one who prefers a brisk pace. For every listener who likes readings that contain emotion and a lot of inflection, there is another who needs readings to be very plain so that the reader gets out of the way and lets the author's words speak for themselves.