I'm sorry, don't see any difference
The font weights are different for starters. The label on the left is shorter in height than the label on the right.
Which version do folks have on their MacBook Airs?
For reference, the two pictures above are from the 13" 2013 MBA.
$ ioreg -lw0 | grep IODisplayEDID | sed "/[^<]*</s///" | xxd -p -r | strings -6
LP133WP1-TJA7 Color LCD
Seems pretty insignificant to me. I suggest you take on a hobby.