Corrected entry: Quigley is an extreme long range rifle shooter. Why take on all Marston's thugs when he could easily take out Marston from long range? He proved he could take out Marston from extreme long range when he shot the two thugs next to Marston.
poehitman
2nd Aug 2010
Correction: Many reasons are possible. Quigley may have wanted to be sure it was actually Marsten and not (as we see in the film) one of his henchmen wearing his clothes.