Mumbo and PP. Nobody has made a chump out of me. Check the AMM manuals for the aircraft.
I never in my wildest imagination ever though that I would have to explain this to a bunch of people who profess to fly airplanes as a profession, but...
Airplanes bend during flight!!! When they become "Stressed" they bend, but don't return to their original (designed) shape.
By measuring between key places in the aircraft, engineers can determine if it is bent or not.
Next,
mind you airbus are lightweight compared to the boeing's !!!!
Apparently you haven't seen lightweight little A380 have you? Ever compared the operations cost of each? Seat by seat, Boeing looses!
Geeez, kids these days.