Here comes the most anticipated segment for comparison of these two characters i.e. Captain Boomerang vs Supergirl 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 Captain Boomerang vs Supergirl powers, abilities, weapons and gadgets. So lets check out Captain Boomerang Powers and Supergirl Powers.Decide who is more powerful!