A pile of educated guesswork creating estimations of results to variable what-aboutery is not a study.The following is a US study on the estimated death rate in the US from COVID-19.
Estimating The Infection Fatality Rate Among Symptomatic COVID-19 Cases In The United States
They do a bunch of statistical modelling to try to estimate the number of asymptomatic and other unreported COVID-19 infections to come up with an estimate of the true infection rate in the US. They then apply this estimate to the number of COVID-19 deaths to come up with what the actual death rate is when taking into account all infections.
The number they come up with is 1.3%. This puts it as 13 times worse than run of the mill influenza, the commonly accepted death rate of which is 0.1%. However, they also point out that the influenza death rate does not take into account asymptomatic flu cases, so COVID-19 is actually more than 13 times deadlier than flu, although they don't put a specific figure on that.
Based on this 1.3% number, they estimate that if as many Americans caught COVID-19 as caught flu last year, 35.5 million, then the US would see 500,000 deaths from COVID-19 this year. If COVID-19 is more infectious than flu, then the number of deaths would of course be higher, although they don't attempt to estimate that.