A theory suggests that because Nagamasa's daughter (Sugenin) had married to one in the Tokugawa clan, later the performance of Azai side was exaggerated deliberately by the Tokugawa clan and, in reality, Oda side overwhelmed Azai from the beginning.
徳川家が長政の娘（崇源院）を娶っている関係上、徳川家の意により後に浅井側の活躍を誇張したもので実際は始めから織田側が圧倒していたとする説。