Formula to calculate chance to hit(cth.):
CodeChance to Hit = 2 * atlvl / (atlvl + dflvl) * AR / (AR + Defense); multiply by 100 to get CtH in %
if we assume both chars have same level we can take out a part of the equation.
that leaves us to:
CodeAR / (AR + Defense)
so lets take a look at difference in chance to hit with 140 def helm and 440 def helm
a 300 increase in base def for pala will give roughly +3000 in totall def after skill bonuses.
a pala with zb for, storm etc without helm has rougly 36000 defence
with 140 def helm about 37400 after skill% added
with a 440 def helm about 40400 def after skill% added.
now to the difference in cth%. using this formula; CodeAR / (AR + Defense):
(a good zealer has around 30,000 ar right. then lets use that for both cases ofcourse)
140 def helm: 30,000/(30,000+37400) = 0.445 = 44.5% chance to get hit.
440 def helm: 30,000/(30,000+40400) = 0.426 = 42.6% chance to get hit.
so 1.9% difference in chance to get hit vs 10% chance to do doubble damage (=6.66% damage increase)
conclusion: 10% ds is way superior to 300 def add
