You may have read elsewhere it also adjusts suspension characteristics — this is not the case. (motoring.com.au)
Using the DYNAMIC SELECT switch, the driver can also select different suspension characteristics in combination with the AIR BODY CONTROL system: «Comfort», ECO, «Sport», «Sport +» and «Individual». (emercedesbenz.com)
The handling and suspension characteristics of the SS are on point along with the braking. (autoweek.com)