Because the 4-piece bonus is worth like 150 DPS, much more than you'd gain from any two individual pieces.
If you're affliction, the 4-piece bonus is only worth 87.5 dps. I'm not sure if you could gain more than that by replacing 2 pieces with ilvl 239 gear, but the 4-piece would probably still be better on Hodir and Vezax where you get a huge haste boost and shadow bolts make up a larger % of your total damage.
Dont forget to look at the 4pc Bonus as crit rating and not as simply 5% crit. It is equivalent to 230 crit rating. Sure crit may not be worth as much as haste, but that much crit from 2 items is significant.
Incinerate is typically 40-45% of my damage done. So I'd say 92 crit rating would be a fair comparison.
That would only be reasonably accurate if all the spells in your rotation could crit and if all your crittable spells had the same crit rate. The simcraft results on the dps-delta are the better choice for comparison than trying to determine a static combat rating equivalent.
I'd like to model a 0/13/58 build that replaces SL/ISL with Bane. In other words, it needs to cast SB as part of the normal destro rotation every 30s. (Yes, it loses DPS. 'How much' is what I want to determine.)
I'm pretty sure that it's not sufficient for me to squeeze in 'shadow_bolt,time_to_die>=30' as an action at the bottom of the priority list (at least not in a way that properly balances Incin/SB casting). Am I reading the source correctly in that it currently does not support doing something like the druid's 'eclipse_left' flag to only cast an SB when the buff is not up and the time left is <2.5s?
There is option that could be used for this purpose, "shadow_bolt,isb_trigger=1" , but it was not working since it expected "old" ISB.
It is fixed in new version of simulator, so you can check with it when it gets published (or compile code).
Another issue with simulating that scenario is that when you want to simulate raid environment you would use "optimal_raid=1", and that include ISB at 100% (as perma buff).
One way to estimate what you wanted is to do it with "optimal_raid=0":
1) first get usual DPS for 0_13_58, with "optimal_raid=1"
2) then get DPS for "optimal_raid=0", and calculate ratio of those two (rough estimate how much you gain from raid buffs)
3) now change "talents=" option for 0_13_58 to include ISB, still keep "optimal_raid=0", and put "/shadow_bolt,isb_trigger=1" somewhere near start of "actions+=" and get new (lower) DPS
You will get reduction of DPS due to using shadow bolt as DPS3-DPS2, for non-raid environment (I around 90 DPS, but that was not for standard 0_13_58 gear, but for my gear with "armory=" option).
Then you multiply it with raito of DPS2/DPS1, to get estimate of how much it would reduce your DPS in raid situations. That is not 100% correct approach, but it will give you close enough number. In my case ratio was around 1.65, and estimated DPS loss due to using shadow bolt every 10sec or so was about 150 DPS (again, may be more for BiS 0_13_58)
I actually do the opposite, which probably takes more text to actually enter, but gives me the full list. That is, I have a header (I stuck it in my custom Warlock_Gear.simcraft file) that looks like this:
That is, I believe, all the flags for raid buffs that you can turn on. I'm only posting it here because I was unable to find this comprehensive list anywhere handy and had to manually look through the CPP code to figure out what flags were being looked for. Note that (like the scorch thing) there are some buffs that are kind of overlappy, but others are omitted (I wasn't able to find reference to ebon plague or imp faerie fire, but there's misery and earth_and_moon instead) so you'll want to make sure you hit the flags right.
Having this setup makes it really easy for me to run more realistic simulations - like many of us, my guild's 25-man comps are often skewed in weird ways (we often don't have a mage, boomkin, spriest, unholy DK), even moreso for 10-man raids.
I noticed that that the 3% haste multiplier and 3% damage multiplier buffs have not been implemented for simcraft; swift retribution/improved moonkin form and ferocious inspiration/sanctified retribution respectively.
1.The global damage multiplier of fer insp/sanct ret might not affect the spec rankings or stat scalars but AFAIK, the 3% global haste multiplier stacks with wrath of air, or 5% spell haste multiplier. Both (+dmg and +haste) buffs will have substantive effects on scalar values. Is there an eta on their implementation?
2.BoW appears to be documented as unimplemented but BoW is showing up on mana gain charts in the html outputs. However, disabling BoW via optimal_raid=0 followed by blessing_of_wisdom=0 and mana_spring=0 does not cause any dps change..nor does it stop appearing in the html output charts..what gives? Is it present or not? If it is, why can't I disable it?
3.BoK is also noted to be unimplemented. Again, I am unsure if it has in fact been so but just not updated as such on the variables page. Again, I tried disabling it with blessing_of_kings=0 but no dps change, so either it was never in effect in the first place or there's a problem with toggling it like BoW.
ps, I am running default published gear.simcraft files but running it with optimal_raid=0 to isolate the respective buffs, @30k itrns. I came to the conclusion that 1&3 most likely dont exist yet in the calculations because disabling them has no effect on dps. 2 on the other hand is problematic because while disabling it has no effect on dps, it appears that it cant even be disabled (according to html outputs), so is it not coded or is the disabling command not working?
Either go Affliction and deal with the lower DPS on destro-centric fights or tell your mages to suck it up and cast Scorch.
This post Mage: Simple Questions/Simple Answers suggests that a single mage maintaining Scorch (when glyphed) loses 240-255 dps based on spec. The majority of this damage comes from losing a major glyph (185-200) DPS. The DPS loss of actually casting Scorch is listed as 55 dps. If this is the DPS lost from a single mage performing a duty that multiple mages can perform (excluding the ramp up time, which is where the glyph is most important, and unfortunately where I don't see data) the individual loss diminishes further. As nenad's calculations suggest, even a best case scenario of ~100 dps lost for the "ISB/Chaos Bolt" spec and buff maintenance indicate that it is better for even a single mage to cast unglyphed Scorch than it is for a warlock to maintain ISB as a Chaos Bolt spec.
No one argued with you on this. The demo spec without DP isn't there because you'd want it over the DP one, it's there in case you're a demo fan and you already have a totem of wrath/DP effect in the raid. If you have the spellpower and the right conditions, of course DP is totally superior.
And you should work on your explanations, you're confusing us all.