Auschwitz Museum says 100,000s, whilst the Jewish groups say over 3m of Jews killed at Auschwitz. Who's right?

Actually, the New York Times journalist, Michael Kimmelman, said that hundreds of thousands of Jews were killed at Birkenau, not Piotr Cywinski. Further, Birkenau was only part of the Auschwitz camp complex. Why don't you get your facts straight before asking your questions?