Correct me if I'm wrong, but our values vary widely by spec, given the relative crit of each build, as well as the larger emphasis on Stamina for Demo locks. The weighting to +hit and +crit also is impacted by our +dmg. About the best we have right now is the "Next Stat Value" section in Leulier's spreadsheet (linked in the original post).
Attack Power is quite linear and easy to model (from discussions I've had with a feral druid friend), whereas caster stats are very much interdependent.
Also, for CoR modeling, here's the posts you need:
Boss Armor:
[RAID] Boss armor values
CoR benefit:
http://elitistjerks.com/498690-post35.html
These assume both Sunder and Faerie Fire are already up, so the increase is 5.69% (7700 armor bosses) or 6.36% (6200 armor bosses).
So, if PhysicalDPS * CoR_Reduction > CurseOfDoomDPS, do CoR on appropriate bosses.
Given a 10k Curse of Doom, here's the calculation to determine if physical DPS is high enough:
10000 / 60 = 166.66 DPS for CoD.
166.66 / .0569 = PhysicalDPS = 2929.115 on the higher armor bosses. For lower armor, same calculation, but .0636:
10000 / 60 / .0636 = 2620.545 Physical DPS
Even simpler, here's what you multiply CoD by to find the required physical DPS:
7700 armor: multiply CoD damage by .2929115 (or .293 to be easy)
6200 armor: multiply CoD damage by .2620545 (or .262 to be easy)
If physical DPS is higher than the result, use CoR. If not...go ahead with CoD, and your raid probably has more issues than CoD vs. CoR.