Dealing with a rejection from a journal
I read recently in economics a single publication in a distinct top-tier journal earns you professorship. Hard to understand for me as a physicist, but if it is really like this and I know the ratio PhD students/professors in economics is much much smaller than in experimental sciences (at least in Germany), then you have to live with the fact that the acception/rejection is more difficult/sophisticated and more lottery-like than in other scientific branches. On the other hand, your chances to get tenure are likely also much higher than in those. I hope this solaces you a bit :-)

And if you got 2 papers published already, you know there is nothing wrong with the way you write your papers in general.