Airlink is definitely not any better than usb link for me, and in fact towards the end of my flight this afternoon it started freezing a little, which is new.
So all in all, a nice option to have and if they can improve it from here it’ll be great, but not a game changer for me in any performance sense. Just lovely to do short flights without a cable. Longer flights I still need power, and at least this now means I can use my macbook pro charger which gives the Quest 2 all the juice it needs!