Surely population density will play a role there as well? Even in Reykjavík, the population is more spread out than in most capital cities, and definitely all of them in Europe except for maybe somewhere like Vaduz.
Lower population density might reduce rate of spread, but it's irrelevant to mortality rate, unless people are more likely to die the higher the dose they get (likely to some extent, but not firmly established), and that a higher population density means a higher average dose of virus (maybe, but no evidence for this).
Iceland just reported two more deaths, but still the numbers are very encouraging. Singapore's numbers look very similar to Iceland's, except for far less testing. And of course, the population density of Singapore is far higher.
I heard today that in German hospitals even in palliative care units people are only allowed one visitor per day for one hour. I don't know if that concerns all parts of Germany. So lots of people, if Corona- infected or not, will die alone.
i have a friend working as a nurse in a NoCal hospital. She doesn't work with COVID cases, but other types of patients. She told me the hospital is on complete lockdown, no visitors allowed. This is a common story many other places. i saw a news story about a young man with no known pre-existing conditions who died, and his wife and kid never got to see him. Once patients like this enter the ICU, they either survive, or you never hear from them again.
Remember all those college students heedless of the virus as they went on spring break? Dozens of them are now positive. I'm not going to say I'm glad, or that they deserve this, but i hope the story gets pushed hard so that other young ones with similar ideas will realize how serious this is.