I've been one shotted in super with the golden gun several times.
English
-
I've head shot a couple of Titans in their super and it drops their health to a sliver, I've also one shotted a couple of active SoL hammers. I guess it's just inconsistent but in the middle of writing my original post the thought occurred to me range could also play a factor but I'm pretty sure I was in close range to them and no one shot.
-
People also forget the variations Sunbreaker can have. I have more hammers, slight tracking, with health regen on kills, but a lot have the Sunspot creation and overshield.