As the person that queried the rule in the first place, and being the one that profited from it (only giving up 3VPs instead of 8 for withdrawing my crippled and skeleton crewed Sharlin) I still have to say that the reward for my opponent seemed a little low...
I agree with Da Boss on this one and think that if a crippled and/or skeleton crewed ship withdraws from the fight, then the opposing player should garner 1/2 VPs - I also think this should apply in Campaign AND normal play 8)