Actually early humans becoming food producers was a greater revolution than taming animals or making potterly 
this is because of the following reasons
the humans were hunter gatherers they didnt know how to eat or hat to eat...wat they used to get to ate them
but know they have the knoledge about food
According to me, early humans becoming food producers was a greater evolution because when they began farming and cultivating grains, they came to know about the other facilities or more about agriculture which was the most important thing to set up their civilization. If they had not been known to food producing then they would never be able to make pottery or tame animals because pottery would be of no use if there would be no food. Therefore, food production was a greater evolution.