It's all relative. Have both MS LR and a MB 560 S class with the Burmiester sound side by side in the garage. Why they are both there and how they fit is another story.
Both set for immersive sound and surround sound, tuned to the same station. I'd say the LR is at least 90% as good as the Benz.
Interesting to note that my '95 Acura stock 4 speaker system with maybe 100 W seems to be a lot louder, if only half as good.
Thanks to
@WilliamG for the suggestion. I had the MS sound set to auto, which seems to default to junk. Who would have guessed it turns off speakers?
Note, greater than zero chance my hearing is shot, so your results may vary