Dictionaries (M-W) commonly define a gunfight as an exchange of gunfire.
However, the OED defines a gunfight as "a shooting affray". {paywall link}
Several stories & film describe or depict a gunfight where only a single combatant possesses / uses a gun, such as in the 'classic' scene from Indiana Jones.
Given such stories, is it reasonable to assume that a gunfight can involve 2+ people, where only one (presumably the winner) has a gun? Would this be a euphemism for a certain kind of gunfight?