@ takata
Now that everything is showing that stuff involving AP & THS fantasy laws are not worth the bandwith, we should go back to the basics of Unreliable Airpseed Events... if we really want to understand what kind of situation was faced by AF447 crew, and possibly discuss what could have confused the PF and crew. PJ2, Chris Scott and few others have already tried (more than once) to bring back this thread on the cockpit confusion (hence, ergonomics and interface issues) but it looks much less sexy than talking about any Airbus Systems getting confused.
So far this thread plus the previous four total 9677 posts and counting. Apparently, questioning, probing and trying to understand technical and engineering "stuff", as you put it, regarding the aircraft and its FBW controls seems to be not the thing to do in your mind. The conclusion seemingly has been reached by you, ergonomics and interface issues were the cause, end of discussion. It will be interesting to see if in the final BEA report if they are in agreement with your conclusion. Hopefully, they will have a more "in depth" examination that goes beyond your present "bandwidth."