I would argue this is a bad example - most luxury cars aren't really meaningfully "better", they just have status symbol value. A mid range Honda civic or Toyota corolla is not "worse" than a Mercedes for most objective measurements.
The Mercedes has superior suspension that feels plush and smooth. Wonderful materials in the cabin that feel pleasant to the touch. The buttons press with a deep, satisfying click. The seats hug you like a soft cloud.
All of that isn’t nothing. It is difficult to achieve, and it is valuable.
All of that make the Mercedes better than a Corolla, albeit at a higher cost.
Will you get there faster? No. Will you get there safer? Well... no. Will you get there with less traffic? Will the drive be easier? Eh... no.
So it's about equivalent. You might be slightly more comfortable. If you happen to be paying attention when you take that measurement, otherwise you wouldn't notice.