In 2_4_0_3 version of the dps spreadsheet (as well as in the older versions) GoA+Deadly Main hand+Instant Offhand is better than WF+Deadly Offhand for all gear levels if 3 or more points spent on either poison talents.

In T4-T5 gear, the discrepancy is around 1% of your total damage while in T6 gear, the discrepancy is negligible.

Edit: The above values are for Combat Swords build. You can expect any dagger build or shadowstep build (due to sinister calling) favor GoA more over WF.

Edit2: According to my calculations, with 2.6 speed MH, 1,5 speed offhand and with slice and dice up;

Untalented,
Main Hand deadly poison provides 59,6 dps
Offhand instant poison provides 22,6 dps

The values match quite well with the poison dps values of the spreadsheet.

I don't think there is anything wrong with the poison dps calculations of the last version of the spreadsheet. If we disregard the slight possibility of miscalculation of dps provided by WF or GoA, we can assume that GoA+Poison on both hands is better than WF+Deadly poison offhand. At least until you get a Warglaive in each hand.

Our typical melee group looks like this:

Rogue
Rogue
Rogue
Warrior
Enhancement Shaman

In most situations there is aboslutely no point to discuss wheter WF is superior/inferior to IP+GoA, because if your Shaman is skilled he will rotate totems and provide both buffs.

And then - without question - WF is superior.

Late reply, I know, but:
Even with a hemo build, it takes 17.5 seconds to build up 5 combopoints for a finisher. With a Ruthlessness Proc, this is only 14 seconds.
On avarage, a Combat build with Combat Potency will be slightly ahead of the hemo build at this. Especially at higher level hasted gear (proc per strike for the win there). So 20 seconds is really a worst worst case scenario. On avarage, a Combat build will be closer to requiring only about 16 seconds to build 5 combopoints, about 10 with a Ruthlessness proc and very good Combat Potency proccing. These are rough numbers, but you get the idea.
So yes, some people will gamble on getting their procs right. If they do get their procs, it's rewarding, if they don't the effect is marginal.

Oh high HP trash with 5% or less HP Envenom is better than Evi but that about all the raid utility it has atm.

It helps, certainly, but I think Mutilate is still a bit behind even with the change. Bumping Mutilate from (say) 30% crit to 45% crit will up it's expected damage by about 10%; assuming Mutilate was, say, 40% of your damage before, this is then a 10% increase to 40% of your damage, or about a 4% increase to Mutilate DPS (plus whatever you get from the extra combo points, an effect I expect to be fairly small). Thus, for a 1500 DPS rogue, this change would add about 60 DPS to Mutilate, which is larger than the estimated gap between Combat Swords and Mutilate. Additionally, Mutilate still has heavier positional dependency which will limit it's DPS in some circumstances.

So, fundamentally speaking: it helps, to be sure. And it might even be close enough that we now need to devote some attention to modeling it. But I suspect on the whole it still runs behind Combat swords at equal itemization.

That said, itemization needn't be equal; for instance, if you lack Warglaives but can get a Crux of the Apocalypse and a Shiv of Exsanguination (or some such) one might fight that the damage rivals any combat swords setup you can get without Warglaives.

Yeah, I agree that it isn't quite up to Combat Swords, but I think at this point it's not nonsense for one of your rogues to talk about doing a dagger spec, if only to soak up the plentiful number of high end daggers. I mean, sure, Warglaives are better, but unless your guild is really lucky, you're going to be looking at what, 2 sets max?

We're a bit more casual, but for me, given that it distributes weapons a little more cleanly, and that one of my raiders just honestly likes the playstyle better, this last change was enough for me to green light him into giving it a try.

Wouldn't the combo points be a bit more than fairly small? In the mutilate thread there are comments saying that stacking agility and crit over hit once geared provides for much larger dps gains than expected by gut. Mutilate already has massive combo point generation. If relentless procs and a high crit rate you can end up doing mutilate, 4pt finisher, mutilate, 4pt finisher, repeat, for as long as you keep critting.

That keeps up Find Weakness's buff, and provides significant energy generation. That seems to be fairly large and it should scale. Am I missing something?

So, two things:

1) I admit I am conjecturing a bit here, but it is my impression that most people overestimate the benefit gained via extra combo points due to higher crit rate. It helps, to be sure, but I'm reasonably sure that the majority of the damage gained via a crit is from the damage itself and not from the combo point.

2) Increasing crit rate by 15% doesn't give 15% more crits; in reality, the number is more like 10% assuming a typical crit rate (with a 30% crit rate, expected combo points per Mutilate is 2.51; with a 45% crit rate it's 2.7, which is less than 10%). Regardless: you gain an extra .2 combo points per Mutilate. That's 1 combo point every 5 finishers, and thus ~20 Mutilates to get enough combo points for an extra finisher - assuming you don't waste any of those procs, which you likely do (unless you're doing 3+ cycles, anyway). So best case scenario, you get an extra Eviscerate every 2 minutes or so. An Eviscerate does, what, 2400 average damage at the absolute maximum? If so, we're gaining 2400/120 = 20 DPS from the combo points, and in reality I'd be willing to bet that that estimate is generous. So is it negligible? No. It does have an effect. But it's maybe a quarter the benefit of the raw crit damage and thus doesn't really change the underlying point.

Thinking about it more and doing a little back of the envelope math it looks like you're definitely going to end up wasting more CPs with the new talent, at least with a 4+ cycle. Basically, there are 2 sequences that can cause a wasted combo point:

no ruthlessness proc -> mut crit -> mut crit

and

ruthlessness proc -> mut non-crit -> mut crit

Assuming 30% base crit, the chance of wasting a combo point on any giving cycle is:

without Puncturing Wounds
.4*.51*.51+.6*.49*.51 = 25.4%

with Puncturing Wounds
.4*.6975*.6975+.6*.3025*.6975 = 32.1%

I wonder if the change is enough to justify switching to a 3+ cycle (ensuring 0 wasted CPs)?

edit -- hm, I didn't take into account that you generate 0 CPs if neither Mut swing hits....that'll actually increase the the proportion of hits that generate 3 CPs, and thus means even more wasted CPs.

edit 2 -- if this change goes through, perhaps Mut is competitive enough that modeling it correctly should become a higher priority? *wink*

Maybe I'm behind the times -- I haven't been able to keep up for a bit now -- but isn't the inability to adequately model Seal Fate a big part in modeling Mutilate?

It's actually not that hard to model. The hardest part of a perfectly accurate modeling is the disruption to one's cycle based on so many possible outcomes and cycle lengths. Much of that can be mitigated by intelligent adaptation of one's cycles on the fly.

Much of the myth of Seal Fate being difficult to model arose from an earlier spreadsheet error in the DPS spreadsheet. Many people called it difficult to model because the DPS spreadsheet was showing unachievable DPS amounts. What really happened was the the spreadsheet was adding instant attack damage to every Seal Fate procced combo point. When this bug was fixed, the displayed DPS values look to much more closely match reality.

In fact, the current Seal Fate modeling (even for non-Mutilate builds) is looking pretty good now that the bug was repaired.