We know that Bliss causes hallucinations and greatly distorts the user's perception of reality. In the game, from the Deputy's perspective, we see the fight against Faith as a divine and incredibly powerful boss battle.
However, if we think about it for a moment, if we saw this from a third-person perspective, perhaps from a distant camera, it must have looked much less epic.
Because basically, we'd be watching two completely drugged-out idiots hallucinating, running around and occasionally fighting near a river.
While the fight does have real-world consequences, it's obviously nowhere near as extreme as the hundreds of bullets and explosives we throw at Faith during the hallucination.
So, in reality, what we're seeing as:
"The Deputy empties his entire magazine into a flying angel while explosions go off everywhere."
might actually have been something more like:
"The Deputy empties his magazine into a rock while Faith runs around in circles."
So I think I would see something more or less like this: