Well, guns are force multipliers but they also required upkeep. Do you imagine niggers cleaning and maintaining weapons, let alone managing to shoot them accurately?

This post is specifically referring to operation eland (alchetron.com) and it appears to be a pretty well documented event.

Two hundred Conquistadors conquered, I think it was Chili and then Bolivia before moving on to other regions. The natives were too busy trying to knock them out with blunt weapons for their bargaining/slave culture of trading warriors ect. The Spanish had horses, swords, steal helmets and grit.