I submitted a site in june 05 to dmoz. Now this site changed in feb 06 totally, so i asked on dmoz (R-Z) forum and resubmitted it. They said, whichever is seen first may come on dmoz. The first listing never came on dmoz and 2nd one hasn't too. And the bad part is one-two page sites are listed where my site should be. Do they ever revise the listings? Does anyone see any changes these days?
If you suggested the sites to the same category in the same way, then the second will probably delete the first. Otherwise, it's random which one gets reviewed first - but it really makes no difference, since 99.9% of descriptions and titles are rewritten by editors. Sites are reviewed and added daily, but it's unpredicatable which ones and in which categories.