Many posts in this thread are saying basically the same thing, that Jorgan "deserves" the promotion to offset his earlier demotion, or because he once outranked the PC, or because he's been in the service longer than Dorne.
In my opinion, none of those facts matter. The promotion isn't a reward for hard work or good service, nor is it a present to be given to the one you like better or are trying to romance. It's a job, a vitally important job, and you assign it to the person who will perform better at that job.
Dorne is clearly more professional, and she isn't ruled by her ego or by personal vendettas. She does what she thinks is best for the squad, not what promotes her personal agenda. She may do things too much "by the book" --- certainly some people think so --- but she also knows how to USE the rules to get what she wants without simply breaking them. That's a skill Jorgan lacks.
If you really think Jorgan makes the better CO, then promote him. But if you give it to him because he "deserves" it, then I think you're making a mistake.