Norway: 237 deaths
Sweden: 4468 deaths
(Yes there are more people in Sweden than Norway, but not that much more).
My (personal, subjective, I'm not a doctor, etc…) impression is that Sweden authorities where afraid of overreacting and the economic fallout of that. The Norwegian government (despite currently being right-wing) still decided to be careful and eat the economic cost.
Sources: https://en.wikipedia.org/wiki/COVID-19_pandemic_in_Norway https://en.wikipedia.org/wiki/COVID-19_pandemic_in_Sweden