The moving throttles give you a sensory input through your hand on what is happening with the power setting and keeps you more in the loop.
Quite...and well worthwhile, IMO.
The autothrust on the 'ole L1011 is the same, and
very accurate, without excessive throttle 'hunting'.
A superb arrangement...and oddly enough, I have never had it fail to function as advertised.
Combined with DLC, an unbeatable combination.