Hmm no this isn't quite right. If Brandish can kill people by making their inner organs explode, why isn't she doing this all the time?
Step 1: Spot enemy
Step 2: Enlarge his organs
Step 3: Keep on enlarging until you spot an explosion
Step 4: Profit
notice how I purposely left out the ??? Step, since there really is nothing else to it.
But to me it seems like all the people with OP powers have an IQ of 40. Otherwise I cannot explain how badly they're using them.