How accurate is the FOQA data versus the actual ECAM (display) ?
Does the FOQA get its data direct from the ECAM (what is displayed in front of you) or direct from the aircraft systems (ie engine, FADEC, sensors etc....).
Is it possible that the FOQA data does not actually represent what was displayed on the ECAM ? (due to lag, or the way it is set up, airbus computer issues....)
Yes sure you expect the them to agree with each other but unfortunately not everything works like it should in the Airbus (just look at all the OEB's and TR's)