S n R and Owain
I have no knowledge of Airbus aircraft but have an old CTP mate at Dunsfold who very much does. He says the trick is not to try and correct the aircraft as soon as it rolls due to turbulence but let the FBW do what it designed to do. Non intuitive and maybe easier said than done for many pilots.
Re roll damping as we all know the upgoing wing loses AoA and the down going wing has an increase. This produces asymmetric lift in the sense needed to reduce the roll rate. This effect is enhanced by increasing the aspect ratio. It is also greater the steeper the lift curve slope of the aerofoil concerned.