If the Chinese government should be fully responsible for starving millions, then it would be no less logical to give it credit for saving millions, too:

During the Difficult Three Year Period the state also expended large amounts of money and materials carrying out famine relief in the heavily stricken areas. Spending on relief funds was increased, the basic food supply for disaster victims was guaranteed, large teams of medical care workers were sent to provide medical aid in the disaster-stricken areas, and so forth. With mobilization and direction from the CPC and the state, the entire nation fought together against droughts, floods, locust plagues and other natural disasters, using a variety of production and self-rescue activities.

(Source.)