If you suffered zero killed, then what is the need of publicly stating you suffered zero killed? Wouldn't that just agitate India even more and make it seem to the world that China was the aggressor in the incident? I was watching a documentary about the Sino-Indian war back in June and it specifically said that Khrushchev called China the aggressor and India the victim in 1962 because China suffered far lower casualties than India, in a meeting with Zhou Enlai (this logic is really stupid but it works).