The Advantage of Simplicity
Here, Clint Eastwood's character, the Man with No Name, kindly demonstrates to the bad guy that the pistol is more compact and thus agile in terms of quick draw against the rifle in Sergio Leone's For a Fistful of Dollars (1964). He also ends up shooting the bad guy in the process of demonstration; which is unfortunate, but also not because the bad guy was a pretty bad guy. So it all works out.
At its core, For a Fistful of Dollars is a typical hero story where the lone protagonist goes alone and outnumbered against a organized group of evildoers. While the bad guys have a bunch of henchmen and resources, the Man with No Name is only armed with his brain and skills. What's really fun is how he weaves in between the two ruling gangs and cleverly tricks them into inflict damages amongst themselves, coming in for the final sweep and killing the bad guy in the duel above. The entire story is about winning the battle not through brute force, but through a more agile and clever strategy.
The tactics and philosophy of the Man with No Name, is also rooted in a certain minimalism, a sense of light-footedness that allows the him to think on his feet to ever-changing circumstances, while having an central core that aspires to do good and make money. Acting alone with help from the villagers as necessary, he is also not tied to or bogged down by an organization. There is a certain sense of anarchical simplicity that draws you into the character, which is also the very characteristics that give him the very advantage he needs to take down the established and organized ruling gangs.