I can lay out HOW the aircraft has this problem. The break out force (Force required to get the rudder moving at all) is MUCH TOO HIGH RELATIVE TO THE FORCE TO REACH THE STOP.
In Airbus the ratio is 1.45 -- in Boeings and MD, the ratio ranges from 3 to 6.5.
AA's part in this was rigging the simulator with a different rudder response model than was in the a/c.
The report makes it clear that the FO was likely surprised by the a/c response to his rudder input as the pedals at that speed give you either nothing or full on.
The two other incidents where the FO was aggressive with the rudder were in 727s which have rudder ratio changers and a maximum deflection to breakout force TWICE that of the A300-600.
That training and experience were then brought to an a/c where:
Tests were also conducted in which the subjects were instructed to move the control wheel and rudder pedal to 50 percent of their available range. The tests showed that the pedal force applied during the 50-percent condition resulted in full rudder travel, even though that force was one-half of the force applied at the 100-percent condition.
Page 75 (89 of 212) of the report.
For those still unable to grasp the human factor significance of a low maximum deflection to breakout force ratio, lets just call it rudder snatch.