According to the people around Kyoto where nationwide information gathered during the Sengoku period (period of warring states), it was understood that 'the Takeda army and the Uesugi army were stronger than any other army in Japan,' and such public estimation was firm even after the death of Kenshin.
つまり、日本全国の情報が集まる戦国時代の京都周辺の人々にとって、「武田軍と上杉軍が日本最強」ということはほとんど常識であり、謙信の死後もその評価が揺らぐことはなかったということである。