BP,
With only 2 confirmed mechanical failures, I don't think its as bad as the picture you are trying to paint. What is high for the type is the number of pilot error accidents, which to me squarely points to an alarming lack of proper training or plain absence of ability
That leaves me to conclude that, 1. Something seriously wrong with training given by the manufacturer. 2. Continuity training by those companies involved is pants, or 3. Big question mark over the standard of pilots being pushed into those right seats.
Ive seen all three