In WW II, Jews were either killed or driven out from Germany (and all the area it conquered). What followed was the mass exodus of Jewish scientists to the US, which helped the US build the atomic bomb. Meanwhile, in Germany, German scientists were also racing against the US to build the atomic bomb, but they didn't manage to finish it before the US did.
My question is: If Adolf Hitler had been nicer to the Jews and made full use of Jewish scientists, would he have won WW II? I think that this could have been very possible because the US would not have had the atomic bomb but Germany would. This would have determined the war outcome decisively.
Am I right?