I don't think that's true. Germany or Austria might be good outcomes. Sweden had few measures in place but their death rate is far higher than most neighbours.
The US has the 15th highest per capita death rate. It's on track to go up in that ranking:
In South Korea they all gravitated to masks very early, and they developed enough testing capacity early on to allow contact tracing to remain viable (so far).
Australia is spared for the same reason most of Latin America, most of Africa and hotter climates in Asia have been.
Nigeria, Egypt, Mexico, Argentina, Colombia, Indonesia, Vietnam and Thailand don't have such low death rates because they've been running testing at the rate of Germany and doing tracing & lockdown & testing & quarantine as well as South Korea. It's the hotter climates. It's hot in Melbourne, Perth and Sydney during the Winter in the Northern Hemisphere, ie during the outbreak so far. Melbourne has been shielded for the same reason Lagos Nigeria has been.
Australia's measures are without question further helping to limit cases. Having a warmer climate during the outbreak time while simultaneously implementing aggressive measures, is the ideal double whammy to get a good outcome. The climate makes it dramatically easier.
Indonesia is only testing at the rate of 116 tests per million people. You only find what you measure. When the rate of testing is that low you can't make any claims about the true coronavirus death rate in Indonesia:
https://www.worldometers.info/coronavirus/#countries
And it hasn't helped that the Indonesian government has been deliberately withholding coronavirus information from the country:
https://www.thejakartapost.com/news/2020/03/13/we-dont-want-...
Your statement isn't very useful. It's the per capita death rate that matters the most of any metric. It's non-sense to compare the US to countries with 5% or 20% of the population using absolute numbers.
In terms of density, it's the NYC region that overwhelmingly accounts for the problem in the US. NY + NJ = majority of US deaths. The NYC region is the most dense on population in the US, which dramatically magnified its outbreak.
Approximately 44 of 50 states have lower per capita death rates than Sweden. Most US states are doing extraordinarily well in fact.
Half of US states are seeing no serious outbreak at all.
Arizona has 7.3 million people and only 131 deaths.
Belgium has 11.4 million people and 4,000 deaths. Sweden is considered a relatively good outcome in Europe so far, they have 10 million people and 1,000 deaths. Texas has three times the population of Sweden with 1/3 the deaths.
Some more examples:
Utah 19. Oregon 55. Arkansas 30. Washington DC 67. Delaware 41. Hawaii 9. Idaho 33. Iowa 49. Kansas 69. Maine 20. Minnesota 79. Nebraska 18. New Hampshire 23. New Mexico 31. North Dakota 9. South Dakota 6. Montana 7. Vermont 29. West Virginia 9. Wyoming 1. Puerto Rico 45.
Lower population density helps a lot in most cases. However San Francisco is also one of the most dense cities in the US and only has ~15 deaths or so. That's thanks largely to climate, which impedes transmission heavily. The same reason the entire San Diego County only has 53 deaths.