Chance and the girl ride away from the shack and the other gun thugs are not more than 15 seconds behind them- all they had to do was get their guns and saddle up. Yet when Chance stops, he has a couple of minutes to talk to the girl before the other gun thugs ride up.
After he has a falling out with the gang, Chance makes a number of errors an experienced gun thug would not make. First, he leaves all of the other guns in the shack for easy access- and in fact one of the other gun thugs shoots him as he rides away.
Likewise, he leaves all of the other horses ready to ride.
Finally, he had a rifle at the shack yet when the gun thugs are riding up to his location, he engages them with his pistol.
Likewise, he leaves all of the other horses ready to ride.
Finally, he had a rifle at the shack yet when the gun thugs are riding up to his location, he engages them with his pistol.