So, the math I've done indicates that any time you're /WAR, Hagun is better both in terms of DPS and WS damage.
If you're /DRG (with both sets), then Soboro will win.
Here is the excel sheet I made:
http://www.megaupload.com/?d=X7M6546N
You'll notice that you can't vary Haste or Delay. In my opinion, they aren't relevant for this comparison because you would make the same decisions regarding them regardless of which weapon you're using. This makes it impossible to compare SAM/DRG Soboro to SAM/WAR Hagun. You could include Haste with a minimum of effort, I just didn't feel like it because I'm not particularly invested in the Samurai job let alone this specific weapon comparison.
Things that aren't accounted for:
1) Zanshin - Doesn't seem like a big deal, but likely gives Hagun an effective 97-98% Accuracy on first-swings that weren't already Double Attacks and doesn't give that boost to Soboro.
2) Job Ability/Weaponskill Delay - Soboro's WS frequency is ~50% higher than Hagun's. This is a huge factor, especially considering Soboro is "better" under very high haste conditions.
3) Berserk's effect on DoT isn't considered.
Funny things: Hagun with 17% DA actually has higher DoT than Soboro.
Still, I'm just going to feel like I'm waving my hands this way and then waving them that way until someone quantifies the JA/WS delays.
Edit: By the way, I think I might edit that document to compare Fort to the Mag DA GA some time this week. =p
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