Then, a 3 focused attack vs. 3 agility w/ F+E will yield an average damage of .18, meaning to chew through Darth's 5 health will take 27.77 attacks.
A 3 focused attack vs. 1 agility w/ F will yield .79 damage, meaning to chew through a B's 8 health will take 10.13 attacks.
Note, this is all based on expected damage. The real proper way would be to say the ship is 50% likely to be dead after ___ attacks. But I don't have my stuff set up that way since I don't really care about that too much.