The fundamental gap in isekai utility lies not in the scale of power, but in the divide between innate status and technical application. Comparing a YPS-3 authority-type like Aqua to a YPS-4 physical-type like Mathias Hildesheimer is a category error. One wields the inherent rights of a deity, while the other manipulates the laws of physics through rigorous calculation. The YPS gap is irrelevant because their abilities operate on different metaphysical axes. What emerges is a study in the failure of pedigree versus the triumph of methodology. Aqua possesses high divine status but remains a functional vacuum; her nature is a punchline because her lack of intelligence renders her high-tier magic a source of collateral damage rather than salvation. In contrast, Mathias is a scholar who treats magic as a science, utilizing dust explosions and vibrations to bypass the systemic limitations of his "weak" crest. While Aqua is a god who cannot navigate the basic requirements of mortal existence, Mathias is a man who has engineered his own reincarnation to erase his previous ceilings. This comparison reveals a core truth about the genre: raw divine authority is useless without the intelligence to direct it, whereas technical mastery transforms a biological liability into a national asset.