[Zhenya]

Wrong.

The whole point is that even without ready access to guns, the Jews were able to fight of a powerful army. The idea here is to extrapolate how things would have went had they been armed to start with:

" There was little “gun culture” among European Jews of the 1930s, so few Jews had the equipment for “reloading” — the home manufacture of ammunition"

"...home manufacture of ammunition is legal everywhere in the United States."

"The Germans suffered over a thousand casualties in the first week of fighting alone. The Germans had to spend more time subduing the Warsaw Ghetto than they did conquering the entire nations of Poland or France."

etc etc