I don't know if you're aware of this guide :
https://steamcommunity.com/sharedfiles/filedetails/?id=2382433615&searchtext=mechanicIn the attack speed section it says that armed attack speed is 0.75+ base weapon attack speed and if you're single handed you multiply the total by 0.85
Actually it may be 0.74 instead of 0.75 given what's in the dbrs.
And if you're unarmed it's 100% attack speed base.
To me it looks like unarmed is kinda high AS, and some weapons are faster, others slower.
If you calculate (0.74+x)*0.85 = 1 it gives x = 0.436 so weapons with 0.45 or more will be faster, at least on paper.
After that you get a distortion with the animation speeds in the dbrs, the frames in the .anm, etc.
But maybe it's not much of an issue as I'm not sure unarmed was even meant to be played.
Sure some builds can benefit from it's high speed and also very high cap (350% IIRC) but I'm not sure it was meant to be played by the devs.
Unlike Grim Dawn, you can't make a skill only usable by unarmed in TQ.