"Tenka," an abstract word meaning "the world" that appears in Emperor Jinmu's title, is a concept broader in meaning than the word "kuni" (meaning a specific region) that appears in Emperor Sujin's title, and was also created later than the latter, which leads us to believe that Emperor Jinmu is a literary creation made later than Emperor Sujin by those who compiled the Teiki (Imperial Genealogy) and the Kyuji (Court Records).
これについては、神武の称号にみえる「天下」という抽象的な語は、崇神の称号にみえる国という具体的な語より上位の観念であり、また、後に出来た新しい観念でもあるので、神武は崇神より後に「帝紀」「旧辞」の編者らによって創られたと考えられる。