Prius vs Brabus G500, impact physics IRL

My 1 month old (at the time) 2600 lb Alfa Romeo Milano Verde, was T-boned by a 5500 lb GMC Suburban whose driver admitted that she was airheading as she blasted through a red light. My car had my entire family of 5 on this, my birthday, riding to a San Diego hotel. My oldest son, sitting at the door, a foot from the gas filler, and point of impact, suffered a bad whiplash for which he went to the hospital and then was released; he still has neck pain, at 42 years old, but no other injuries were sustained.
I know a couple who were struck head-on in their 2400 lb Alfa Romeo GTV 1750 Veloce coupe, on the LA Vegas run by an older Chevy Impala; both people in the Alfa sustained injuries and are with us today; both people in the Impala were killed by the motor going through the firewall!! I BELIEVE in the (older) Alfa Romeos!! Mass has bearing; good engineering Rules!!

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Sir Isaac said there is no truth in that.

But what is true is that the longitudinal stability of a car is far higher than its lateral stability - because it's longer than it is wide. Also, lower CG gives more stability in both directions. The Prius hit the side of the all-brick-battleship, thus pitting the Prius' low-CG and longitudinal stability against the brick's high-CG and lateral stability. Despite the mass advantage, the behemoth had no chance in such a circumstance.