Not stiring or axe-grinding, just thinking out loud. Seems to me there's clearly both a training issue and a rudder sensitivity issue, and even the board couldn't agree on which was more significant.
Right on!
It's like buying a new high performamce sports car after driving a cushy soft limo style.
All of a sudden in an avoidance manuever you snap the steering back and forth and you now find youself quickly in the ditch with the much nore responsive steering.
It seems that you chose the sports car but failed to anticipate its differences from your ingrained skills.
So who's fault?
Should there be a level playing field in designed response of aircraft to pilot inputs?
Better petition the regulators then, because clearly your taining departments may not adjust your training for such difference.