The whole argument that MiC is making assumes that 1) only Christianity (due to having the one true god) can be moral, and that 2)whatever god does is good.
The people who existed before Christ, like the ancient Egyptians, and in other places not touched by Christianity like China and India, could not possibly be moral. The Inca and Aztec and Maya and other people of the Americas had no laws or rules or ways of determining right and wrong. Somehow they managed to scrape by for thousands of years without the benefits of Christianity. People who were forced to convert to European ways of life were automatically better off.
This is blatant ethnocentric bullsh!t.
The Europeans who invaded other societies and enslaved, murdered and robbed the locals did it all in the name of their Christian religion! They saw themselves as superior, not because they behaved better
[1], but because they had the right god. In actuality, the only thing the Europeans excelled at was weapons technology.
Praise the lord and pass the ammunition.
Every human society establishes functional moral guidelines and while none are perfect, some are pretty good. Many non-Christian human societies have figured out how to survive and create economies, arts, social structures that have lasted, sometimes for many centuries. Some were far more socially adept, peaceful, sustainable and egalitarian than anything in Europe. No particular god necessary.
Any "supreme being" who decides that the only way to deal with bad behavior is to kill the bad person is not very supreme. Most advanced industrialized societies have abolished the death penalty. No particular god necessary.
If any religious morality was superior, it would be pretty obvious. In fact, as we have discussed before, the more religious a country, the more violent and problematic it is. Every social advance has happened with in spite of resistance from the very people who claimed to be on the side of god. Go and look at the twisted, hate-filled faces and read the twisted, hate-filled rhetoric of the Christians who massed to prevent civil rights in the US, in South Africa, in India. Slavery, racism, witch-burning, persecution of gays, etc. have not been just anomalies from a handful-- they have formed the very basis of religious behavior.
Genocide, killing every member of a society including elderly and children, is evil. The great flood, if it happened, was the most evil act in the history of the planet. Killing innocents and laying waste to all the plants and animals was unbelievably evil. No way can that be redefined as "good". I am amazed that there are people who think the abortion of one month-old fetus is a wrong and evil act, but the great flood was just fine. No. If killing one fetus is evil, than killing a million men, women and kids is far more evil.