Yes, all cars must meet safety standards. I think that when it comes to Mercedes, the difference is in their "Pre-Safe" system. Yes, it relies on some sensors, so it MIGHT be considered "crash avoidance technology" but I think it falls outside of that definition.
In the event of an "ALMOST" accident, the seat belts tighten, and brake assist goes through the roof! Much to the dismay of cars behind you. If THEY get too close, too quickly, the headrests spring forward to prevent whiplash.
These kind of features aren't considered in crash testing, so I wouldn't expect high crash rating from the NTSB. Crumple zones, yes, intact passenger compartment, Yes. Stronger steel and aluminum parts, most likely.