Free market capitalism is better for the following reasons:
1. It is the only form of governing that honors individual property rights.
2. Because of #1 the people are freer and work harder to improve their lives.
3. Because of #2 more is produced, the economy grows, and standards of living rise for everyone.
4. In free market capitalism the economy is much more efficient because the allocation of scarce resources is determined by prices, which have embedded in them the information of millions of individuals making small decisions about where their money gets spent. Resources automatically flow to where the demand is, and therefore the wants and needs of the people are served quickly and efficiently without government intervention.
5. In a centrally controlled or highly regulated economy, the distribution of scarce resources is controlled by a relatively few number of people who CAN NOT KNOW all the information necessary to serve millions of people with the full spectrum of wants and needs. These economies become very inefficient compared to free markets, and as a result standards of living fall for everyone.
6. Free market capitalism encourages people to work together to make better products for higher margins. This results in the Invisible Hand which magically converts a society full of selfish people into a society full of people who are trying as hard as they can to make things their neighbor wants to buy.
7. The hallmark of centrally controlled economies or welfare states is corruption as different groups struggle to attain the political power necessary to protect their businesses or to outright steal from one group to buy votes from another.
8. In welfare states we see groups of people trying to be seen as helpless victims who can possibly provide for themselves so they can claim benefits from the public trough. This does not incentivize people to produce more, and provides a disincentive for those who work hard and get taxed to pay for the benefits. Again the economy slows down and the standard of living drops for everyone.
9. Free market capitalism distributes money goods among people based on merit and productivity. All other systems redistribute wealth at the barrel of a gun.
10. Communism is the most effective killing machine ever devised by man. In the last century more people were killed by their own Communist governments than were killed in all the wars. Communism is the worst form of government, ever.
Early America was very close to a perfect free market capitalist economy, and we went from a starving colony of a couple hundred people to the freest, richest world super power in less than 350 years. Free market capitalism has been proven to work, and all other options have been proven to fail.
It's really no contest at all.