I've read all the Austen novels, and I've especially read Pride and Prejudice (at least twenty times). I wish I was kidding, but some of you may have realised by now that I am huge on re-reading and I started on Jane Austen at a young age. I read it just the other day, actually. I think it's brilliant.
I can't comment on Bronte's works because I haven't read them in full, but I find there to be a lot of passion in P&P. A passion that is sometimes cleverly hidden in formalities and language, but it's present all the same. In fact, I'd say both Elizabeth's and Darcy's incredible passion for life pulsates throughout the entire novel and is what keeps the pages alive. These are people who know their own minds, how they want to live their lives, and they don't bend or shy away from anything to get there. At the same time their character flaws are clearly obvious, causing a series of misunderstandings and misjudgments, which leads to the conflicts that keep the novel interesting.
My point is, I guess, that you don't have to type out passionate words to convey passion. It can be done with a remark, a frown, a bow, a turn of the head. I've always appreciated subtlety in writing, instead of finding myself bludgeoned to death with the point the author is trying to make.