I accept this debate. Mario and Luigi are superior to Goku and Vegeta in several ways. Although they lack the strength, speed, endurance, and super abilities as the Sayians, they make up for it in determination, teamwork, and by not causing cataclysmic havoc whenever they enter a conflict. The Mario Bros. are the Mickey Mouse of video games. Since their conception, the duo has been entertaining children and adults around the world. Unlike Goku and Vegeta, who only fight, the brothers Mario are capable of much more. The two have been seen playing sports, saving the environment, racing, exploring the dark reaches of space, and rescuing victims of abduction. The Mario Brothers wouldn't pose a threat to national security or kill thousands of innocent civilians in superfluous combat by using obnoxious energy attacks. I await comment from Pro Sayian team.
It's aknowledged that Goku and Vegeta are more powerful than Mario and Luigi, but they are not better. All it would take to end human life as we know it is one single screwup or miss from an energy attack, and that's really not a desirable trait.