I've been pndering the comparison as well, but something about the way you phrased it struck me with a possible reason.
My mother was an in house model for the designer Hattie Carnegie when JFK was a Senator and Jackie was among the clientele (as were the rest of the Bouvier women.) According to my mother, who more than once was the assigned model for her, she was among the most arrogant and insufferable of the clientele. My mother chalked it up to the Bouvier's being nouveau riche and not being "of" class.
Interesting that your mother knew Jackie O. We were talking about her the other night, the only time we ever heard her speak was when she led a tour of the WH. She spoke very slowly and deliberately and sounded like the dumbest person we ever heard. Did she always speak that way or was it because she was on TV and reading a prepared text?
I read somewhere, that it was Jackie who coined the term “Camelot”, after JFK’s death, to create a fantasy of their time in the White House.