The disparity between a YPS-2 tank and a YPS-5 primordial demon renders a combat comparison meaningless, but it reveals a critical inverse relationship between destructive capacity and character depth. While Diablo possesses the ability to devastate continents, his narrative function is that of a high-functioning tool. His existence is a solved equation; his absolute devotion to Rimuru eliminates the friction necessary for genuine growth. He operates as a cosmic extension of his master's will, making him a static element of the world's power structure rather than a developing persona. Darkness, conversely, occupies a space of far greater emotional volatility. Her inability to land a hit is a physical limitation, but her struggle is rooted in the tension between her noble duty and her private desires. Her high Bonds score reflects a genuine investment in her comrades that transcends simple servitude. Where Diablo offers stability through overwhelming force, Darkness provides narrative tension through vulnerability. The gap in YPS tiers highlights a common isekai trend: as a character ascends toward godhood, they often shed the internal contradictions that make them compelling. The Crusader's struggle to reconcile her masochism with her role as a protector creates a more resonant character study than the primordial demon's flawless execution of a butler's duties.