I have a GF with the set timeless this set increase his attack but decrease his defense, actually I wonder should I looking more defense or more hit points?
It would take a very long time to answer that question, but in a few sentences, what you want is to find a compromise between your effective hitpoints when damage reduction is not buffed and when damage reduction is buffed. Your effective hp will fluctuate very often, as damage reduction buffs are applied to you and expire. Play around with this spreadsheet to see how raising defense, deflect, and hp affects your effective hp.
To see the effect from common dc buffs, multiply the % of the following by 2, and adding the number on top of your AC. If using armor specialization 3/3, multiply by 1.74 instead before adding the number on top of your AC. You can add up these buffs' % to see what happens when multiple of them are up simultaneously.
A good DC can have all three of these buffs on you maybe 75% of the time on average.
Basically, with armor specialization, you want maybe 3.5k defense, the rest into hp. Without armor specialization, 3k defense, rest into HP. If in doubt, stack primarily HP, because it is much easier to overstack defense than hp with gf gear considering most armor give good defense and that the set bonus of GF weapons is defense.
The advice is good, but that spreadsheet in the linked thread is wrong. It is applying Deflection as an additive mitigation bonus when it is in fact multiplicative, hence the spreadsheet is overstating total mitigation.
The advice is good, but that spreadsheet in the linked thread is wrong. It is applying Deflection as an additive mitigation bonus when it is in fact multiplicative, hence the spreadsheet is overstating total mitigation.
I think the formula is perfectly fine since it adds deflection multiplicatively.
Comments
http://nw-forum.perfectworld.com/showthread.php?582071-Tanking-Spreadsheet-Def-Deflect-HP-Mitigation-amp-Effective-HP
To see the effect from common dc buffs, multiply the % of the following by 2, and adding the number on top of your AC. If using armor specialization 3/3, multiply by 1.74 instead before adding the number on top of your AC. You can add up these buffs' % to see what happens when multiple of them are up simultaneously.
Foresight: 11%
Astral Shield: 30%
Hallowed Ground:40%
A good DC can have all three of these buffs on you maybe 75% of the time on average.
Basically, with armor specialization, you want maybe 3.5k defense, the rest into hp. Without armor specialization, 3k defense, rest into HP. If in doubt, stack primarily HP, because it is much easier to overstack defense than hp with gf gear considering most armor give good defense and that the set bonus of GF weapons is defense.
I think the formula is perfectly fine since it adds deflection multiplicatively.