That's just not true. The Escalade gets a score 258% lower than the average.
That's abysmal. And from your story, it sounds like you could've done a lot worse than to pick up a subscription no?
Look, I'm not a CR fanboy. I only signed up to check out ratings on induction cooktops. Turns out, there doesn't appear to be any (they basically just rate the spec-sheet, no actual reviews AFAIK).
So this discussion is the first time I've used it it's been good for anything. While they may not be perfect, they buy a vehicle, test it, run surveys. I'm not aware of any recent scandals. You're going to have to try harder to discredit them since you're not actually offering an alternative.