This is not a speculation - this is a pretty good estimation of how much you can profit from increasing weapon dps by 6 while the per-hit damage remains more or less the same.
But I admit I only looked at one spreadsheet. It takes time to understand how they work, and I am by now pretty familiar with the DPS one, while I have no experience with Adriana's.
Edit: OK, I gave Adriana's spreadsheet a quick shot, using my gear. It gave me 1639dps with swords, and 1646 when I switched to Fist MH. So it says +7dps in favor of the Fist. That's something I can believe.
Still not going to purchase them for 105 badges.
Edited, May 23rd 2008 6:39pm by Wytryszek