The hidden power that tips the scales in favor of the Seven Deadly Sins is their ability to manipulate and exploit the weaknesses of human nature. Each of the sins - pride, greed, wrath, envy, lust, gluttony, and sloth - preys on different aspects of human desires and emotions, allowing them to influence and control individuals in various ways. This inherent understanding of human weaknesses gives the Seven Deadly Sins an advantage when it comes to tipping the scales in their favor.