Is it your argument that the difference in standard of living is starting points?
I'm not sure what exactly that means, but I'll recap my argument:
If we're trying to decide which system is better, Capitalism/democracy vs. Communism, it's not all that instructive to just point out that Cap/Dem countries are better off than the communist countries.
The reason for this is that all of the major Cap/Dem countries were already significantly better off than the Communist countries before they became communist, and without exception, the communist governments were born in savage civil, anti-colonial, or revolutionary wars.
Australia would be a very different place, for example, if the indigenous population had to kick out the British then fight the US for a decade, like Vietnam had to (French in their case).
I find it much more convincing to point to the total repression of civil liberties and gross violation of human rights as reasons for communism's failure. It is a system that is simply too easy to abuse, and it's possible that this will always lead to crappy countries, but we don't have an example of a nation that was on the vanguard of successful countries, turned communist, and collapsed.
Thus, for W. Germany and S. Korea, they had millions and millions of dollars dumped into their countries by the rich, powerful countries. The Soviet Union was never nearly as economically powerful as we feared (and then distorted), and no other communist nation was even remotely a first world country. There was no money to rebuild E. Germany like we rebuilt W. Germany, even if Stalin had the will.
I'm simply arguing that the historical test cases aren't very good. I think, however, that there is, for example, a great deal of solid economic data to reject specific tenants of communist ideology. There are many arguments against communism, the fact that Laos is crappy compared to Canada just isn't one of them.