"Those "native forces" were Neolithic people,"

Did you even read the article? They had twenty thousand people who were armed with rifles, which means that, even if they had a backwards culture, their technology was very far from Neolithic.

"Romans claim 50:1 casualty ratios for conquest of Gaul."

All numbers that ancient historians give for enemy armies are highly suspect in general (everyone wanted to exaggerate their triumphs).

"Hitler rose to a place of prominence in the early years of the party (1919 - 1923) largely as a result of his considerable skills in oratory, organization and promotion."

Yes- notice how rationality and intelligence are not on that list.