Here comes the most anticipated segment for comparison of these two characters i.e. Supergirl vs Captain Boomerang superpowers. Powers and abilities define their strength, both physical and mental. So what will happen if these two super characters engage in a fight? Here you can compare Supergirl vs Captain Boomerang powers, abilities, weapons and gadgets. So lets check out Supergirl Powers and Captain Boomerang Powers.Decide who is more powerful!