Devotion in isekai functions either as a cage or a catalyst, and this distinction renders a direct power comparison between a YPS-4 authority type and a YPS-3 physical type irrelevant. While the raw gap between nation-level administration and city-level combat is wide, the true divergence lies in how they utilize their proximity to a central protagonist. One serves as the architect of a totalitarian regime, utilizing her administrative role to erase the sovereignty of others to secure a master's throne. The other transforms from a bullied child into a strategic partner, using her magical aptitude to build a domestic sanctuary. The difference is found in the DNA of their growth. Albedo remains a static extension of Nazarick’s will, her loyalty a result of a programmed edit that stripped her of genuine self-determination. Sylphiette, however, navigates a rigorous path of self-actualization, evolving from the persona of 'Fitts' into a woman who chooses her place beside Rudeus. This reveals a fundamental truth about the genre: power is not just about the ability to destroy, but about the agency to define one's own role. Where one represents the horror of absolute, programmed loyalty, the other demonstrates the strength found in voluntary vulnerability. The administrative efficiency of the former is a tool of oppression, while the tactical competence of the latter is a tool of preservation.