The fundamental divide between these two YPS-4 combatants is the difference between existential evolution and technical optimization. While both operate at a nation-level scale, their DNA profiles reveal a stark contrast in how they inhabit that power. One treats capability as a desperate shield forged from trauma, while the other views it as a corrected equation. For the Beater of Aincrad, YPS-4 status is the result of a brutal growth trajectory where survival depends on pushing beyond system limits through sheer willpower and the weight of fallen comrades. His high Ego score reflects a character who actively wrestles with his identity to protect his bonds, turning his destructive ceiling into a tool for emotional preservation. Conversely, the reincarnated sage views the world as a series of academic errors. His power is not a discovery but a restoration, using physics-based phenomena and the intentional manipulation of the First Crest to bypass biological ceilings. He possesses no Darkness because he faces no true existential risk; he is simply an expert returning to a classroom of amateurs. Where one fights to define himself against a cruel system, the other exists to refine a system he already mastered. This transforms the comparison from a contest of output into a study of agency: one is a survivor who climbed to the peak, the other is an architect who built a ladder to a place he had already been.