Soul Sole and I have been working on this very enigmatic ability this past week. It appears/comes into play when a weaker ship/fleet is in battle with a stronger opponent. It may or may not appear in Planetary Invasions.
Since the numbers themselves don't appear in the debug.err, we're having a very hard time determining what it actually does. Our only hope lies in getting +100 Luck to work in TA (as that way weapons always roll their full value)