Those differences aren't well known, or made available. If you read a review of a car its generalities with subjective feelings. The big car magazines don't nerd out on the details. I wish they would.
This is kind of a an ambiguous area because of the fact that printed magazines are halfway out the door and most people now get their information from specialized internet sites. Some very detailed (and often objective) information is readily available and it's pretty easy to compare cars for their specific technological differences and other differences.
Unfortunately, there is also a lot of disinformation taking up space online and it's easy to be fooled by inaccurate or irrelevant information.