Since the predominance of northern Kyushu is generally vanishing in the 2nd century in remains during the Yayoi Period, this is one of the reasons why many archeologists can't agree with the Kyushu theory.
一般的に弥生時代の遺跡では、2世紀にはいると北九州の優位性は失われるため、多くの考古学者が九州説に与し得ない理由の一つとなっている。