I think that different editors will have different results and experiences - depending on the categories that they edit. Now the above statement ::
Each is different, each has completely unique content, each submitted to relivant catagories, dmoz alive?
Since I don't know the site and don't have access to what was suggested - I cannot comment specifically. However from the suggestions I look through - my rough estimate
50% are submitted to a totally incorrect category - nowhere near the right place - and none of them should have been submiited there since the categroy descripions left no doubt about if they had been read. They get moved for another editor to deal with them. They may or may not be listable.
If the remaining 50% - ny rough guess is:
10% are submitted close to the right category, but there was no reason for it to be incorrect had the submiiter read the category description. They get moved but will probably be listable.
1% are submitted to the wrong category, but acceptably so - since it's a judgment call. They get moved but will probably be listable.
10% are obvious duplicate content and are rejected
10% are suspected of duplicate/mirror content and are held for further investigation - probably for a long time
2% are sites under construction or with significat broken links or content. They are deleted.
1% have no worthwhile content and are deleted.
5% are spam - they have already been submitted
Of the sites that eventaully get reviewed - perhaps 1 out of very 2,000 has an acceptable title and description. Some are almost acceptable and require some cleanup, but 99% have totally unacceptable descriptions.
So it depends what you count as acceptable, I didn't bother to do the math, but it would seem that of the sites I review, less than 25% eventually get accepted, however since 50% get sent to other editors, some of those probably will get included.