I could almost swear that while jealously looking at Lusche's score many tours ago, that he had a capture in attack score. Maybe as a pilot, he bailed and ran in the map room?
All attack captures are deleted from a player's score by the system. You can (that is at least it used to be that way) get an attack capture doing what you mentioned, but the next day it will be gone.
However, it's not erased from a squad's score, so if you're going for a 1337 squad attack rank, that's a must. The problem is: Nobody cares about squad rank #'s - for a good reason