Remember, this virus has circulated weeks before the confinement, so don't you think a doubling R0 have completely changed the number of cases that have been modeled so far, and therefore the CFR?
Of course we have much to learn and this new R0 number is part of that learning process, but imo, we can't think like 2 days ago when we thought the R0 was between 2 and 3.
I'm just reading about that city in Germany, Gangelt, where they did those blood tests to 1000 people, they found out that 2% are actively infected, and 14% have the antibodies (indicating a prior infection):
Multiply by 100, get 16 million
Population of New York state is 19 million
Maybe there's still more to learn about the COVID-19.