True agency in isekai is found not in the ability to destroy, but in the capacity to rewrite the rules of the environment. Comparing a physical combatant to a systemic strategist creates a fundamental mismatch where YPS tiers become irrelevant; the gap between YPS-4 and YPS-2 describes destructive output but ignores the difference between a weapon and an architect. While one utilizes dust explosions and sympathetic vibrations to dismantle enemies, the other leverages administrative labor and game mechanics to construct a city. The core distinction lies in their approach to optimization. The former treats the world as a series of technical errors to be corrected through individual mastery, seeking a return to a lost scientific peak. The latter views the world as a broken system requiring a new social contract, trading the solitude of a hikikomori for the burden of leadership. This reveals a divide in how the genre handles intellect: as a tool for personal ascension versus a tool for societal stabilization. One character optimizes the self to survive a threat; the other optimizes the society to ensure survival for all. The moral cost is similarly skewed, as the strategist accepts the trauma of death and political manipulation—reflected in a higher Darkness score—while the sage remains a clinical perfectionist. Ultimately, the ability to manipulate the underlying code of a civilization is a more sustainable form of influence than the capacity to level a national army.