The fundamental is question: when does AR do more damage than CS?
	Assumptions:
		a) assume players and bows are otherwise identical
	1	b) calculate both for DAP/DFC and D Elemental ammunition
	Methodology:
	2-5	a) calculate ΔDoTCS -- i.e. "how much more" damage a CS bow versus a non-imbued bow? Calculate for a number of different bow skills.
	6-7	b) given each bow skill in (a), calculate AR_mod -- the percentage of armor is ignored by a similar AR bow.
	8-11	c) calculate ΔDoTAR, which is the ratio of damage reduction (%red(AL)) for the original (AL) and modified (AL ') armor levels
	12-14	d) for each bow skill, calculate the Equivalent Armor Level (EAL) at which ΔDoTAR  results in a damage increase equal to ΔDoTCS
	15	e) conclude that CS is more effective for MOBs with an AL lower than EAL, and AR more effective for MOBs with an AL greater than EAL.
		DAP	D ELEM
1	Arrow Max	30	26
	Arrow Min	24	19
	Variance	80.0%	73.1%
2	Critical Strike: (base bow - 60)/600 = %chance of crits
3	DoTCS(crit%) = (crit% * (MAX * 2)) +( (1- crit %) * (MAX (Var + 1) /2) )
4	ΔDoTCS = ( DoTCS(crit' ) / DoTCS(10%) ) -1
	FOR DAP					ΔDoTCS				FOR D ELEM					ΔDoTCS
	bow	% crit	dam (crit)	dam (norm)	total dam	% increase				bow	% crit	dam (crit)	dam (norm)	total dam	% increase
5	120	10%	6.00	24.30	30.30	0.0%			5a	120	10%	5.20	20.25	25.45	0.0%
	180	20%	12.00	21.60	33.60	10.9%				180	20%	10.40	18.00	28.40	11.6%
	240	30%	18.00	18.90	36.90	21.8%				240	30%	15.60	15.75	31.35	23.2%
	300	40%	24.00	16.20	40.20	32.7%				300	40%	20.80	13.50	34.30	34.8%
	360	50%	30.00	13.50	43.50	43.6%				360	50%	26.00	11.25	37.25	46.4%
	==> this is pretty intuitive … your increased DoT is linear with the number of criticals you score.
		the only real trick to the calculation is to make sure a crit is 2X MAX damage …
		… whereas a normal hit must be adjusted for variance.
	==> so from the above, table, a bow skill of 300 geta a 40% crit rate, which does 32.7% more DoT than an unimbued (10% crit rate) bow when using DAP
6	AR_mod = % of AL ignored = (base bow - 120) / 400
	bow	AR_mod
7	120	0%
	180	15%
	240	30%
	300	45%
	360	60%
8	%red(AL) =	1
		(1 + AL / (200/3))
	==> %red(AL) is the amount of damage reduction that a given AL provides
	AL	%reduction
9	0	100.0%
	67	49.9%
	200	25.0%
	450	12.9%
	1000	6.3%
11	AL' = AL * (1 - AR_Mod)
10	ΔDoTAR = %red(AL' ) / %red(AL)
12	==> so we need to solve for AL, where ΔDoTAR = ΔDoTCS for any given bow skill.
13	EAL =		ΔDoTCS * (200/3)
		( ( ΔDoTCS +1 ) * ( 1 - AR_mod) ) - 1
	FOR DAP									FOR D ELEM
	bow	CS crit %	ΔDoTCS	AR_mod	EAL					bow	CS crit %	ΔDoTCS	AR_mod	EAL
14	120	10%	0.0%	0%	n/a				14a	120	10%	0.0%	0%	n/a
	180	20%	10.9%	15%	126					180	20%	11.6%	15%	150
	240	30%	21.8%	30%	98					240	30%	23.2%	30%	112
	300	40%	32.7%	45%	81					300	40%	34.8%	45%	90
	360	50%	43.6%	60%	68					360	50%	46.4%	60%	75
15	Conclusion:
		So there we have it:
		"At a bow skill of 300 base, AR is better than CS for targets greater than AL81 using DAP
			or AL90 using DFire."
		How you apply this information to the critters in front of you is up to you.