Maybe it's just me, but I'm not understanding where you're getting at.
I don't usually brake at 70mph to stop right away. But if I did, I'm sure I be stopping after a few hundred feet, and during a emergency maneuver would have made a skid mark way longer than 15 ft. Perhaps you meant slowing down, and brakes having a more instantaneous feel in that BMW. Again luxury vs. cheap CUV.
As per BMW's own website...
Experience the performance, luxury, and innovation of the Ultimate Driving......while umMm, Nissan was bought by Renault and the former CEO was jailed and escaped justice in a Cello case so craftsmanship went into the crapper in recent years, therefore you get what you paid for.
Remember Nissan was once known as Datsun and crappy CVT's.
Don't even ask YouTube star Scotty Kilmer how he feels.
Road noise sucks for the Nissan Rogue, it's a cheap car, get a Lexus or Infiniti if you want a quiet ride. And oh yeah or BMW.
Hence, I seriously doubt the dealership will do anything but suggest you get a more expensive car for a more tranquil ride or a sports car for that type of stopping power. On top of them just treating you like some sort of "Karen" and their normal we can't duplicate the problem or it's normal for this car mumbo jumbo.