Currently the Barracuda Blade is the only sword with a Blade Storm boost.
Yes, I made this question around two years ago. Before the Barracuda Blade was released, I was told by a contributor that a sword named the "Bruser" cutlass had a Bladestorm boost. So, I made this. I now have bother the Bruiser's Cutlassa and the Barracuda Blade, and I understand this pirate wasn't telling the truth.