I can't check since the game is down, but what is the equivalence conversion between armor and resist all?
For example, N armor gives a K% increase to overall damage reduction.
M resist all gives a J% increase to damage reduction from specific elements (basically, everything other than physical)
Can we come up with an equivalence formula that tells you, based on your current armor and resist values, the amount of armor that is equal to 1 resist all? (assuming we have an equal probability to get hit by a random element)
10 Armor = 1 All Resistance/Physical Resistance in terms of Physical Damage.
30 Armor/3 Resistance = +1% EHP.
Now, when it comes to Magical Damage, armor does nothing.
Armor and Resistance aren't Diminishing returns like you would think, each point of Armor gives just as much Effective HP as the last. 30 Armor would give +1% EHP, 900 Armor from a Shield would give +30% EHP.