Dumbest thing I've heard in many moons, except when reading Supreme Court decisions of late. Why would the Soviets pressure people to underestimate how many Germans the English had killed? If anything they'd want the Brits to look bad. OTOH, maybe they didn't want the Brits to get the credit for killing so many Germans. Germans not being held in high regard at the time.
He was able to sell the Dresden story for years. When he started on the Jews. Everything he ever wrote got a second look.