Combat build critique

[Gurnsey]

{Sword Spec} .11*(Base dps) = SS dps {+Crit Chance}

So, for the +crit chance to give you more dps for an SS build, Sinister Strike damage-per-second needs to be at least 1/10th of your base damage.
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But wait, this still isn't quite right! This is only true if the weapon has the same damage range and dps in both cases. Since this is really an argument of Sword Spec vs. Dagger spec, the situation is a LOT more complicated.

Dagger and Sword dps is somewhat comparable, with sword slightly higher but not too much (correct me if I'm wrong). This reduces dps on the Dagger Spec side. Daggers have a lower damage range, which reduces SS damage (SS favors slower, and thus harder hitting weapons), further reducing the dps on the Dagger Spec equation. However, you can use poisons on daggers (can you really not use poisons on swords? I've never tried). This is a flat damage add, which (in opposition to SS) favors a faster attack speed.

So, the complication is, does added poison damage balance out the reduced SS damage that daggers inflict? This difference, and the base "1/10 Base dmg from SS", would determine which is more effective.

I'm not sure I even want to try that in an equation :P

[edit] Changes due to me being an idiot and performing initial calcs with 150% crit damage and not 200%