Apologies to Lich for the rudeness. Thanks Umbran & PCat.
How would you suggest than to analyze the effect of a twin striking rogue? I'm curious. I do miss how the average damage is between 17 and 200 though...
Here's the DPR analysis from the CO PC I grabbed as an example of OP'd Half-elf. You are saying that this is incorrect right? Like I mentioned, I really am interested how you would evaluate it.
[sblock=ooc]
I ran some calculation in dpr for lvl 12 :
Spoiler: Hide
I'm using two +3 Bloodiron daggers in order to maximise crit damage : +3d10 x2 extra damage, the second part is applyed at the start of your next turn.
Bonus to hit = +4 (stat) + 6 (lvl) + 4 (dagger+rogue) + 3 (weapon enh) + 1 (weap expert.) = +18
You've got +18 to hit at lvl 12, meaning +21 to hit with CA (nimble blade). Taking that a middle AC for lvl 12 is 26, that makes hit on 5+.
Hit chances :
2 miss = 16 * .25 = 4%
1 hit, 1 miss = 104 * .25 = 26%
2 hit = 169 * .25 = 42.25%
1 miss, 1 crit = 24 * .25 = 6%
1 hit, 1 crit = 78 * .25 = 19.5%
2 crit = 9 * .25 = 2.25%
Sneack attack = 3d8 + 4 , average 17.5, max 28
Damage on hit = 1d4 + 3 (weap. enh.) + 2 (weap. focus) = 1d4 + 5 (wow not so great huh?) = 7.5 average
Damage on crit = 9 + 3d10*2 = 42 average
Damage on crit with crit feats = 9 + 2d4 + 1d10 + 3d10*2 = 52.5 average
Twin strike + sneack attack average damage chart:
2 miss = 0
1 hit, 1 miss = 5 + 1d4 + 3d8 + 4 = 25
2 hits = 10 + 2d4 + 3d8 + 4 = 37.5
1 miss, 1 crit = 37 + 2d4+1d10+3d10*2 = 70 (80.5 with crit feats)
1 hit, 1 crit = 42 + 3d4 +1d10+3d10*2 = 77.5 (88)
2 crits = 46 + 4d4 + 2d10+6d10*2 = 112 (133)
I ran 4 builds dpr calc:
Without weap focus nor crit feats = 0 + 5.98 + 14.15375 + 4.08 + 14.3325 + 2.43 = 40.97 dpr
Without weap focus but with crit feats = 0 + 5.98 + 14.15375 + 4.71 + 16.38 + 2.9025 = 44.12 dpr
With weapon focus alone = 0 + 6.5 + 15.84375 + 4.2 + 15.1125 + 2.52 = 44.17 dpr
With both weap focus and crit feats = 0 + 6.5 + 15.84375 + 4.83 + 17.16 + 2.9925 = 47.32 dpr
As you can see, weapon focus alone outbreak the use of devastating critical + rogue weapon mastery: +3,20 dpr vs +3,15 dpr[/sblock]
Thanks for the link to volatility Lich

I do happen to have gone for schooling for that though.