It might not be 50 percent more performance. It could be less than 50% it could be more than 50% every shot and every fight is different. Who is to proclaim exactly how much energy will be needed in a particular instance. What is correct is that gun fights only last a very few seconds so you want every shot to be as accurate as possible and hit as hard as possible. There will be no time for interweb theory, opinions or hunting stories.