COVID 19 / High number of positive cases, but low deaths in Russia

Coronavirus is now distributed all over the world. Russia is in third place, with 379,051 confirmed cases. But, experts are not undertanding two things.

The high number of cases, and the low number of deaths. Of course, this is a very good news, but in 379.051 cases there are only 4,142 deaths. Acording to stats, Brasil has 414,661 total cases and 25,697 deaths.

Also, Spain, UK, Italy and France have a lower number of cases but a higher number of deaths acording to Russia.

Spain 283,849 cases 27,118 deaths

UK 267,240 cases 37,460 deaths
Italy 231,139 cases 33,072 deaths
France 182,913 cases 28,596 deaths

Is the hospital system in Russia better than in other States ?!

Are they using a medicine to cure coronavirus ?!