Is it possible that Mr Dixon really did fancy Jane first, and instead chose the better catch of the Campbell daughter?? Or was Jane instantly and only attracted to FC?

I think early on the novel it refers to the Campbell girl being inferior in looks and such, so I almost got the impression she was second choice. Or perhaps it was just my imagination? Not sure. Any thoughts?

Here is a little from CH. 20:

"The affection of the whole family, the warm attachment of Miss Campbell in particular, was the more honourable to each party from the circumstance of ***Jane's decided superiority both in beauty and acquirements***. That nature had given it in feature could not be unseen by the young woman, nor could her higher powers of mind be unfelt by the parents. They continued together with unabated regard however, till the marriage of Miss Campbell, who by that chance, that luck which so often defies anticipation in matrimonial affairs, ***giving attraction to what is moderate rather than to what is superior***, engaged the affections of Mr. Dixon, a young man, rich and agreeable, almost as soon as they were acquainted; and was eligibly and happily settled, while Jane Fairfax had yet her bread to earn."

Were FC's many references and jibes about Mr Dixon jealousy? Mr Dixon saved Jane on the boat, yet why does FC make sport of him, someone who has done an heroic thing?