Of course while reading the article you are going to be very conscious of detail and image quality because that is the subject matter of the post.

However if that MacBook Pro image was placed on the side of an article where the primary content was the text you were reading, you'd glance at the image and your brain would fill in the details for you. You probably wouldn't notice the difference in that context.

For most use cases, there likely is very little functional difference between the two images. At least, that was how I understood it.