Ah, Consumer Reports of the "sorry we lied about the Trooper and the baby seats" fame.
In seriousness, most of the quality dings have to do with the consumer things (e.g., sat radio, CD player, door locks, whatever) that fleet trucks don't have.
All I can tell you about is my guys like them and they are not in the shop.
True, that is the same.
But a basic understanding of statistics and the failure rates that they report on will show that while they can't make conclusions with significant confidence on the difference between an average and an above average vehicle, they do have enough data to pick out the truly worst of the worst.