Ruling Jolteon-EX's Swift

[Pagan]

I have a question about Jolteon EX's Swift attack. A friend and I were playing a game where I had a Jolteon EX in the active and she had a Joltik with a Fighting Fury Belt attached to it. Jolteon's Swift attack says: "This attack's damage isn't affected by Weakness, Resistance, or any other effects on your opponent's Active Pokémon."

So, should Swift have ignored the Fighting Fury Belt or should the Fighting Fury Belt have kept the Joltik alive?

 

[Asclepius24]

In this case, Swift and Fighting Fury Belt don't interact. Swift's effect means that its damage doesn't change due to Weakness, Resistance, or other effects, so the amount of damage it does never changes. Fighting Fury Belt increases a Pokemon's HP, meaning it can take more damage before it is Knocked Out. FFB doesn't reduce any damage from Swift, only allowing the Pokemon it's attached to to take an extra hit because of a different effect.