Still talking basics, if your power settings are OK, AoA OK, but airspeed indicator goes crazy it is easy to any pilot to realize he is having a wrong airspeed indication.
Rob, I think that part of the concern is that the pilot in the A330 does not have an AoA display as part of instrument display. (That is my understanding based upon a number of posts and explanations on how AoA figures into the FBW and protections features in various Airbus, and Boeing) airliners.