Comparing a self-suppressing authority to a systemic world-rewriter renders YPS tiers secondary to the functional role of their power. While the gap between YPS-5 and YPS-7 is vast, the distinction lies in the axis of application: one manages a secret, the other manages a state. The shared zero-point in Ego reveals a critical isekai truth: absolute capability annihilates the traditional character arc. For Mile, power is a burden of concealment, requiring constant internal recalibration to avoid shattering her surroundings. Her struggle is subtractive, a desperate attempt to remain invisible while neutralizing existential threats. In contrast, Rimuru treats power as an additive resource, evolving from the consumption of the Orc Disaster into a political architect who replaces world orders with bureaucratic efficiency. One hides to protect a fragile peace; the other builds a fortress to ensure it. This reveals that high-tier isekai protagonists stop being "people" and start becoming "functions." Mile functions as a hidden safety valve, while Rimuru functions as a geopolitical engine. The narrative tension shifts from "can they win" to "how do they exist" when the concept of a challenge disappears. Their lack of individual will is not a deficiency, but a consequence of operating at a scale where personal desire is irrelevant compared to the systemic needs of their respective environments.