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