One reason for the “turbulent conditions” handling difference is to prevent your own overcontrolling inputs. Try flaps 3 and flaps full landings on a multi-sector day sometime when you have a lot of thermals and convective “turbulence” as opposed to shear and gusts / crosswinds. As in try the different configurations in as close to the same weather conditions as possible. Do the same thing on a gusty crosswind day with shear.
Tight roll control and higher energy / less drag in flaps 3 is great in the shear / crosswind.
Less ability to over control is apparent on the day where the air motions are more vertical.
Also the roll rate commanded is always the same for a given stick position. What changes is the “kinematics” which is a fancy way of saying “what deflection does the flight control system START with to try and give you the commanded rate”. That is basically what the Hong Kong charts are discussing.
YMMV!