What if Banjo and Sullivan did not try to fight?

Do you think Otis would have killed Roy and Adam if they just went along with what Otis told them too and did not try to fight back? And if he did not what do you think he would of done with them and the wives after getting the guns?

I think he most likely would have just shot both of them in the head to make it quick and painless and I have no idea what the plan was for the wives. Curious what other fans think.