So I ran into a few oddities (at least based on my limited knowledge) while playing around with equipping weapons in the MH and OH slots.
So here's a little background.
Fine Hand Axe
1.30 Attacks Per Second
Balanced Hand Axe
1.37 Attacks Per Second
+0.07 Attacks Per Second
First weapon is my Main Hand and the second is my Off-hand. My character sheet shows my overall DPS as 7.50.
Now I have...
1.39 Attacks Per Second
-0.11 Attacks Per Second
If I use that Dagger to replace the above mentioned Balanced Axe Off-hand, I lose 0.3 DPS even though the tooltip shows that I should gain DPS.
If you do the math to get the DPS of that dagger it's...
(2+5) * 0.5 * 1.39 = 4.865 or 4.9, the tooltip shows 5.2. That is wrong but doesn't explain why I lose 0.3 DPS when changing it with that Balanced Axe.
So I thought that maybe the APS affix isn't being calculated into the tooltip (even though they are supposed to be).
(2+5) * 0.5 *(1.39 - 0.11) = 4.48 or 4.5. Now THAT explains the 0.3 DPS loss.
To summarize this, when putting this Dagger into the Off-hand slot to replace the 4.8 DPS Balanced Axe, the game DOES NOT calculate the "-0.11 APS" affix into the tooltip and thinks the Dagger is actually 4.5 DPS, which is why I lose some over the 4.8 DPS Axe.
But if I replace that same 4.8 DPS Balanced Axe with that same "5.2" DPS Dagger while it's in my Main Hand, I gain DPS like the tooltip suggests in the first place (0.5 DPS which is wrong but at least it gained liked it should), hence the affix WAS reflected in the tooltip (although it was still wrong according to the math above, it should really be 4.9 DPS, not 5.2).
So why then, when dual wielding, does the Dagger LOWER my DPS when replacing the lower DPS Axe but when I replace them as MH items while not DWing it increases it like the tooltips suggest?
It seems that affixes (and something else behind the scenes) are being calculated DIFFERENTLY depending on whether your are dual wielding or not. Something seems broken there unless I'm missing something.
Now onto a separate oddity...
I know that the detailed character stat sheet shows your APS alternate between the 2 weapon speeds of your weapons for each attack (including the +15% APS perk of DWing).
If I put the 1.39 dagger in my MH and a 1.37 Axe in OH, my APS reads 1.68 and 1.45 alternately. Both of those are wrong...
EDIT: Just put on a 1.40 Sword in Off-hand with the 1.39 Dagger in MH. It's showing my APS as 1.60 / 1.48. The 1.60 is correct for the Dagger but why would the Off-hand sword only gain 0.08 APS? If I equip the sword with a 1.30 Axe, they become 1.49 / 1.61 which is correct, so it seems to have to do with a bug in item types?
There's some more but this is getting long and the bottom line is that DW just seems flat out broken in terms of what stats on weapons it uses/calculates and when in terms of DPS and APS.