If it’s on air it will still have dampers, the air parts just replace the steel springs.
The dampers will be oil filled the same as any regular car. Trouble is with stuff like this is they wear gradually over time and it’s not until you compare say 100k mile used dampers to new ones just how much difference there is.
I’m not suggesting that this is the only issue here, the 213 AMG will no doubt be much firmer than older cars with softer suspension setups and more compliant tyres etc but coupled with the cold temperatures, general wear and tear on other components such as bushes, mounts etc it could be enough for you to feel disappointed with the way it rides.
The suggestion of driving another example is quite a good idea, it’s surprising how different two different examples of a model can drive.
New cars really do feel so much fresher all round, tight as a drum, taught but supple and absorb bumps and stuff so much better - but you pay for that experience!