Sue ranks as "Important" because she cooked, cleaned and got pregnant ?
What did Jan ever do "important" back then besides giggle, flirt and change outfits ?
She worried about Hank being mad at her and flirted with Thor IIRC.
That definitely trumps the much earlier ace reporter Lois Lane, or feminist icon Wonder Woman.
And, to the TWIP:
The way Lee changed superhero characterization was to insert all the "real-life" amateur drama stuff from the old romance comics into his superhero comics, not being forward-thinking about women's roles in society.
Which is why Venture Bros has Dr Impossible and Sally--it's not only a parody on what a dick Reed Richards was to Sue, or the idea of making your female lead vanish on command, it's a commentary on how women were written in comics at the time by Stan Lee (and others).
This was not his strong point. You can have your sacred cows, but you can't blow them and fuck them up the ass at the same time.
IVCNUB4 might have a different take on that..