Look man, take a chill pill. It's a floating sword. A sword that floats.
Float, as in being in the air without some grunt to hold it there. Sword, as in a wedge on a stick.
You're taking two generic things and saying you own a slightly less generic thing. Now I get that line between what makes something unique and not-unique is very blurry, but don't you think that its just a bit silly getting mildly upset over a fictitious tool of war that anyone and their mother can come up with?
Like, for real. Do we really need to roleplay having your character pioneer the tech for floating swords? Even I thought of floating swords when I was twelve years old. Some nerd is going to grow up and think about floating sword at one point in their lives.
And, for the record Rizzo, your sword is far stronger than Skully's in terms of attack power. That sword's edge is wrapped in space-time mumbo jumbo, capable of ripping apart anything at molecular levels, and yet Skully just has a really sharp wedge on a stick that can turn into a really sharp stick. Your sword is based on samurai swords, while his sort of strikes me as something you find in Legend of Zelda for some weird reason. Yours is made to be death incarnate, his is basically a weapon + tool.
The only trade off I can discern between yours and his, is that your Death Incarnate has a battery, while his has the worlds smallest infinite energy faucet.
Heck, Skully and I both made weaponized gauntlets. Even if Skully thought to give his some of that sweet link + float action, I would only feel a bit salty that I didn't go the extra mile to add a revolver in my gauntlets. But, I'd still be content because I know the gauntlets I managed to get still have my identity imprinted onto them. They are the knight-esque fists of fisting with some swirly comets that punch and grab stuff, all the while being a cheap tool very handy in the field of technician stuff. Even if someone copied that same idea, I would not be mad because those gauntlets, them Star Servantines, mean something else to me as well as my character than to anyone else, and as far as I know, they may as well be the only one unless I meet another guy who has the same thing.
Basically what I am saying is that this is a pretty silly argument, and it really shouldn't have happened in the first place considering the content being discussed in a submission thread.
Stop it, get some help.