Earlier tonight I was playing a game with Darth. He had 2 crits, both of them being Weapons Malfunction. He had a preexisting Target Lock on a TLT Y-Wing. Darth declared the Y-Wing as the target of his attack- at Range 3 through an asteroid. Darth rolled 2-2=0 red dice. BUT! He had ATC and a target lock, so was able to add a crit result. The Y-Wing rolled his 3 Green Dice.
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Darth Vader is the Lord of the Sith. He can do damage with no dice.