If you were convinced by Airbus that the aircraft could not be stalled and you had no experience with the symptoms of stall in the A330, just maybe it wouldn't occur to you that you were stalled. The conflicting cues would probably lead to cognitive rejection of the stall and overspeed warnings and the total confusion of these guys exceeding their mental envelopes would probably keep it that way!
Regardless of type the failure to fly pitch and power is inexcusable. Add the common sense reality that at 38,000 the plane is way to far into coffin corner for unreliable speed.