Flight Safety,
I think the rudder system on the A300 is pretty logical.
It's the same principle as steering inputs in a car.
If I'm doing 30mph and I want to swerve to avoid an object I would move the steering wheel about 12 inches. If the same thing happens at 70mph the input would be reduced to about 4 inches
Simply put: The faster you go, the more sensitive the controls become.
Whether or not this better or worse than the Boeing system is debatable, but it is a pretty simple principle. And as long as anyone flying the aircraft kept this in mind they should not have had difficulty in controlling the amount of rudder input.
Cheers,
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HaM