The VEEP is usually the last of the appts to be given out. It has been historically viewed as a nom source to get you in, when the others have been used. This isn't a nom source that the best candidate wins the nom, it is more like, the SA wants you and this is the source they can bring you in from. Everybody who applies for the nom, gets it, but only 1 will get the appt. It is similiar to the Presidential nom, if you qualify, you get it, but only 100 can be assigned an apptmt from that source.
DS didn't add anything and he still got the nom. The nom letter from them says congrats, you got the nom, any questions contact the SA.