No one assumes any marriage can be successful, and if they do they are clearly mistaken. Marriage between two ABCD's can endup really badly too depending on the individual. Yes pakistan is a dump pretty much and people want to get out of here. It's so easy for you to keep saying how bad it is, you live outside the dump. Girls who live here can't do much but hope to get married guys from abroad and be able to raise kids there. Everyone dreams for the best.
And this show bazi thing is very much amongst desi american girls too! I have seen them compete with each other over their engagement rings! If one chick gets a 2carat diamond from Tiffany's, she goes around flaunting it. Desi ppl in general show off, not just in pakistan but the ones who grew up in US too. So don't generalize paki girls here when american ones are just as bad.