Apple reports this for the MBA weights:
2020 M1 MBA 2.8 pounds (1.29 kg)
2022 M2 MBA 2.7 pounds (1.24 kg)
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Hence, only a .1 pound difference!
Not enough to write home about! Or, really be much of a factor in deciding.
Given there could be rounding going on, and because the kg measurement goes to an extra decimal place, I figured a conversion from kg to ounces might prove informative…
I'm not very good with metric conversions, but the online calculators show that a .05 kg difference amounts to only .11 pounds or 1.8 ounces!
That's less than the weight of 2 CDs, two pieces of Wonder Bread, two pencils, etc.
See
https://weightofstuff.com/things-that-weigh-1-ounce/
Now, had the new MBA weighed in at 2.3 pounds,
or a half pound less, that would have moved it into the wonderful 12” MacBook Retina realm… and, thus, would have been a HUGE factor to many!