Torpedoes ignore void shields, so it's a little worse on that count, though each destroyer that turns around to attack the<em>Kobras Aquairre</em>is one that's probably not coming home, so you might get 2-3 rounds of being able to shoot the convoy with impunity before they actually start actively resisting.  If the crew has a big chunk of fate points left and wants the salvage, it's probably a good idea.