It's really too early to say one way or the other because spread of the virus started a different times in different countries. Plus we have to factor in the long term excess deaths that will be caused by lockdown measures. Poverty kills (even in Scandinavia).

Sad as it may seem, you cannot avoid those deaths. Stopping the spread of this disease is impossible. Even if you flatten the curve, the virus will continue to infect just as many, just slowly.

>and Sweden's tactics don't seem to be working that well.

Their healthcare isn't being overwhelmed and that is the only thing that matters in any country at this moment.