Read
On the quotes about the A-330 / A-340 zoom climb Airprox incident in NAT RVSM airspace:
Read the report, then you will find great differences with the AF447 case. This Airprox case was a situation with moderate to severe turbulence, large wind speed fluctuations that caused large speed (and Mach) variations and those initiated the incident. One such speed fluctuation caused AOA to increase to Alpha protect, etcetera.
There is no occurrence of the ERRONEOUS speed values that AF447 experienced, no LOSS of valid speeds, etcetra.
The cases are completely different, although the quotes try to make them similar.