On testing it on my system, it seems that the system settings -> appearance -> behaviour settings only affect the pressure required to reveal the launcher and not the speed of the mouse required to reveal the launcher. Hence I am marking this bug confirmed. However whether the setting is actually supposed to affect both the pressure and the speed is a decision to made by the design team.
As temporary workaround, you can change the speed of the mouse in CCSM -> Unity -> Experimental -> Launcher Reveal Pressure. This solution is only temporary since this should be appropriately integrated into the system settings by default.
On testing it on my system, it seems that the system settings -> appearance -> behaviour settings only affect the pressure required to reveal the launcher and not the speed of the mouse required to reveal the launcher. Hence I am marking this bug confirmed. However whether the setting is actually supposed to affect both the pressure and the speed is a decision to made by the design team.
As temporary workaround, you can change the speed of the mouse in CCSM -> Unity -> Experimental -> Launcher Reveal Pressure. This solution is only temporary since this should be appropriately integrated into the system settings by default.