just a thought: assuming you are flying a FBW bus and for some reason (say botched paint job in Perpignan, icing mid-Atlantic, faulty wheel on ground sensor in Warsaw) you get all sort of spurious sensor data confusing the - admittedly redundant and fault tolerant - automation. What can you do to regain basic flight control ? I pretty sure that the A330 will behave just as the 320: it's possible but complicated (no big "red button" to kill the automation) and probably not taught in standard training... Even if it quite literally saved the day in many unreported cases I wonder what will be the public perception if it turns out that automation was a contributing factor here...