My dude, Stellar Blade had a peak of 192k players in the weekend that game game sold 1 million copies on Steam in 3 fucking days. KCD2 had a peak of 250k and that game sold 3 million in a month. You piece the dots here.
500k+ on steam alone, nevermind the game literally broke the nintendo and sony stores, means that it has already sold more than 2 million copies at least on day 1.