The true metric of success in an isekai world is not the magnitude of one's power, but the method by which a protagonist navigates their inherent limitations. Comparing a YPS-3 narrative manipulator to a YPS-4 physical powerhouse is a category error because their abilities operate on different axes. While one focuses on the destructive capacity to dismantle armies, the other focuses on the systemic capacity to survive them. This comparison reveals a fundamental divide in how the genre handles the ceiling of potential. Matthias treats his biological limits as a technical bug to be patched, engineering his own reincarnation to bypass the restrictions of the First Crest and treating magic as a rigorous physics problem. His journey is a restoration of lost efficiency. Conversely, Kazuma accepts his low stats as a permanent condition and instead optimizes the gaps in the world's logic. He does not seek to raise his ceiling; he simply finds ways to make the ceiling irrelevant through high Luck and the creative misuse of low-tier skills like Steal. One character seeks to master the rules to dominate the environment, while the other exploits the rules to endure it. This distinction transforms the narrative from a question of scale to a question of philosophy. The tension shifts from who can hit harder to who understands the system better. In this framework, the gap between a city-level survivor and a nation-level sage vanishes, leaving only two different approaches to systemic optimization.