If you take notice of the 2 identical images below, at first glance the 4:3 Display looks squashed compared to the 16:9 (or the 16:9 looks stretched) Display but they're identical.
Untitled-1.jpg
Below gives examples of a 2.35:1 image on a 4:3 Display and a Squashed 2.35:1 image on a 16:9 Display.
Untitled-2.jpg