She has a hourglass in a BBW form. The great majority of BBWs (and even smaller FFWs) are straight or spear/spoon shaped. They have fuller hips but poorly matched mid-section and bust (not what I'd call "fanging" in many cases).
Samantha Anderson, Maria Moore, Laura Orsolya are all rare BBWs that have a hourglass form, so their chest and hips are wide, with nice asses and hanging busts too.
So even men who don't prefer BBWs might find themselves totally getting their rocks off if they had them in bed, hence the "hidden" beauty aspect because they won't admit it. But I do agree that some others will not, because any cellulite does them in. But any man who likes a little bit of curve and overlooks a little softness will often find themselves perplexed with their unexplained like for a blond like
Samantha Anderson, or a brunette like Maria Moore.
But yes, your "rule" does largely apply to myself. When she's above me, on all fours, breasts hanging down draping my manhood, I want her stomach to rub up against my scrotum, not flatten it.