There is difference between "starvation" and "war crime". The failure of Mao's economic policy led to the death of many Chinese people, but it's like what Japnese army did in WWII. The Japanese killed civilians for fun.
Starvation only accounts for a part of the death toll, the rest can be credited to the brutal "class struggles" throughout the Cultural Revolution. Mao's henchmen probably didn't kill for fun, but they sure killed great many people for whatever perverse ideological reasons. Incredibly, no one in China today is permited to speak of the massive human toll resulted from either the starvation or Mao's brutality, except in the most perfunctory and oblique way. PRC is yet to disclose the real figure.
Bottom line: until PRC regime and average Chinese start to do some serious soul searching, don't be surprised that many in the West find their ceaseless anti-Japan whining hypocritical, and remain unmoved.
Yes, but not always. CCP policy caused it.
But excluding the CCP created famines, the CCP liquidated more landlords and class enemies before they even took over the whole country than tha Japanese killed cicilians.
And afterwards, the CCP did millions more enemies. They didn't have box cars and death camps, but they did it holocaust style nonetheless -- just bullets to the head on the spot for millions simply for being who they were.