As for the claim that Nobumori ran away without helping his ally at the Battle of Mikatagahara, the circumstantial judgment of Ieyasu, who decided to fight in an open field under those circumstances, was more at fault (TOKUGAWA's army had enough forces for besiegement if ODA's reinforcements were counted, so there was a high probability of not losing the battle if he decided to be besieged).
三方ヶ原の戦で味方を見殺しにした点についてはむしろあの状況で野戦に打って出た家康の状況判断に非がある（徳川軍は織田の援軍を含めれば籠城に必要な兵力をそろえていたため、籠城すれば敗戦とならなかった可能性が高い）。