doubleu-anker
There is one way to settle this once and for all.
Get Airbus test crews to take up an A330, with the same w & b and put the thing into a deep stall. Ballast could be gleaned from the sales team. The data from the result could be feed into all the A330 Sims and it could benefit all.
They wouldn't need parachutes as the AB is uncrashable I am told as the built in protections and proper pilot's would guard against this..
Doubleu-anker, I know your are being a bit facetious, but the core of the idea has merit.
Suppose we took a life-limit A330 or a ferryable but badly damaged aircraft, mounted high time engines, installed an ejection seat for the test pilot (singular), installed a ballast control system so you could move the c.g. around quickly, installed high speed telemetry, and went flying.
You could fill all the high risk niches of the A330 performance curves with relatively low human and financial risk. Might even collect enough data in one flight to do the job.
And when you get done you will have one sweaty test pilot who is an expert in flying the A330 at any angle of attack.