Efficiency in isekai is typically a tool for dominance, but here it functions as a mechanism for social integration. Comparing a YPS-3 physical combatant to a YPS-2 authority user is fundamentally flawed because their victory conditions differ; one seeks a precise point of failure in a target, while the other seeks the stability of a systemic whole. Lugh's trajectory is a deliberate climb toward humanity, using his mana output and tactical refinement to stop being a disposable asset. He fights to earn the right to maintain bonds. Shiroe, conversely, possesses the systemic keys to the world but lacks the ego to claim them for himself. His influence is not found in the damage he deals, but in his ability to rewrite the social contract of Akiba. While Lugh optimizes his body to survive a mission, Shiroe optimizes the laws of the world to ensure the survival of the collective. The gap between them is not one of scale, but of direction: one is an arrow seeking a heart, the other is a foundation seeking a city. Lugh’s steep growth represents a pursuit of the self, whereas Shiroe’s zero-score ego makes him the primary servant of the system he created.