If you receive an LOA, and are 3 Q you will earn an appointment from one of the MOCs because the last barrier was the nom.
If you are 3 Q and no LOA, but the nom was principal, you will earn an appointment.
If you are 3 Q, no LOA, no principal, you will compete with the other 10 on each slate. Highest WCS earns the apptmt.
So, as you can see, it all varies on what is next until you know if you have an LOA, or how the slate was submitted.
MOC's will inform you of how they submit. They may say congrats we submitted you as our principal, or they may say we submitted you using the competitive method. Or they may say we use the principal, and competitive, but you were not our principal. That is where if the principal doesn't accept the apptmt., they than allow the SA to use the WCS to determine who will be charged, leaving you still in the hunt.
Amazing how key words can change which path you will be on next.
Good luck.