You bet ya! If not now, eventually. Making such a statement about tires is similar to saying all cars are alike.
I've approached this question professionally for near 30 years. If you can't tell the difference, you either aren't sensitive or don't pay attention. If you had thousands of case studies as I have you will see that Michelins stay at the good performance they come with at least twice as long as any other tire. For many the performance difference is immediate. The Michelins outwear and stay round while doing so.
With 9 out of 10 of the most important drivability concerns fixed by tires, putting Yugo tires on your MB just cause they are round and black is asking for problems. Get a good deal on a good product but like all things you get what you pay for.
Bosch Master, ASE Master, L1
33 years MB technician