Rationality in the isekai genre serves as a tool for systemic control, yet the distinction between the architect and the cog defines the boundary of true agency. Because these characters operate on fundamentally different axes—one wielding authority and the other utilizing physical combat magic—the YPS gap between a YPS-4 and a YPS-3 is less a measure of strength than a difference in function. Demiurge does not fight wars; he designs the geopolitical landscape that makes war inevitable, transforming human lives into parchment through a cold, administrative logic. His power is the power of the script. Conversely, Tanya represents the tragedy of the optimizer. While she leverages corporate discipline to survive, her ascent from an orphan to the commander of the 203rd Battalion is a series of calculated losses. She optimizes her performance to escape the front, only for the system to reward her efficiency with more danger. Where Demiurge views the world as raw material for a master's design, Tanya views the world as a bureaucratic machine she must game to survive. This comparison reveals a stark truth about isekai power: structural authority dwarfs tactical efficiency. Demiurge’s static nature is a sign of total alignment with his system, whereas Tanya’s high growth score tracks her increasing entanglement in a military machine she despises. One dictates the rules of the game; the other simply plays the game with higher efficiency, only to find that winning is its own form of imprisonment.