How was Egyptian culture similar to and different from Sumerian culture?

Both religions were polytheistic, which means they believed in many gods. So they both worshiped their gods in hopes that a god would do something nice for them. Such as giving them rainwater for their dry crops. Although the Sumerians had to work a little harder to worship their gods because their gods were very cruel and unpredictable. They found that a lot of the time their land would flood, there was scorching winds, humidity was intense, etc. Egyptian gods on the other hand were very nice and good to them. As long as the Egyptians obeyed and worshiped, in which they always did. Then the gods were good to them