Although mine is a 350d, not an AMG43, I have ABC. I do notice the difference in sport + mode it's a lot more bumpy, whilst comfort mode is a lot more like being on a boat 
I probably wouldn't notice on an A road or motorway, but going semi rural (more bumpy, twisty roads) difference in more pronounced...
Whilst sitting waiting for my daughter when picking her up from work I pass the time, whilst parked, with the engine running, moving from comfort to sport + watching the bonnet rise and fall hahaha. I need to get out more, I know...
Graham
I probably wouldn't notice on an A road or motorway, but going semi rural (more bumpy, twisty roads) difference in more pronounced...
Whilst sitting waiting for my daughter when picking her up from work I pass the time, whilst parked, with the engine running, moving from comfort to sport + watching the bonnet rise and fall hahaha. I need to get out more, I know...
Graham