Sweden has a low population density: 64 people per sq mi.
Compare that to the entire United States, including Alaska, Wyoming and Montana: 94 people per sq. mi.
Stockholm: 13,000 people per sq, mi.
New York City: 27,000 people per sq. mi.
So yes, statistically a lockdown in Sweden should make less difference than here.
During the average workday, workers increase Manhattan's population by 1.5 million