[quote=@Descartes]
I think some characters with magic or otherwise weaker supernatural abilities would still find it difficult to challenge someone without supernatural abilities and a gun. Likewise, someone with a rifle can definitely challenge a low powered character. The nature of abilities doesn't seem to really be an appropriate scale here.
[/quote]

I'd have to disagree on that, and here is the reason why, in my opinion. The fastest human reaction speed is around .101 seconds, done. No argumentation. Now, if we simply pit human against human, one with a gun, one with, say, martial training, they are actually equal. Because of reaction speed. In the time it takes to level that weapon and react, pulling the trigger, the martial artist can react, not to the bullet being fired, but the action of aiming. Now granted, this is using a semi-automatic weapon, automatic changing the game. But at the same time, this advantage only works well when the gunner has distance, due to a lack of skills up close when compared to the martial artist. Yes there are many what ifs, like the gunner getting his weapon point blank at the chest. There is also the martial artist disarming it and other scenarios. The fact of the matter is it is two humans, no powers, relatively equal, based on positioning.

Now give the martial artist a low tier power. Say a fireball. The game just changed up quite a bit.

EDIT: By the way. I'm not saying a gun does not change up the odds of a fight. But it changes it as much as a power, not moreso.