The Air 3 is only 10.5”. A half inch might not sound like much but I suspect there’s still a noticeable difference on how much is displayed on the screen at one time. The point of a screenshot of a 11” screen is so I won’t have to guesstimate.
It doesn’t really make much of a difference. The 11” is pretty much almost the same size as the 10.5” but just a teensy tiny bit wider.
The big difference is Display Zoom - More Space