Weapon Defense vs. Damage Taken

So I was right a long time ago then with the original thread on SW, back when I dabbled with a few ideas at the formula. There is some form of "parity" system, where if your level increases but your defense doesn't, you'll take more damage than a lower levelled character. That's probably how my 4x hunter was taking 170 at Zombies while my friend's 6x sin was taking 210+. Also, I saw with my own eyes, when my girlfriend's cleric hit 33 forever and a day ago, she suddenly started taking 30 more damage from the block golems I was training on with my page at the time, my guess being that 33 is when a new equipment set becomes available.

Yeah, the class penalty changes each time you can equip new gear.

Maybe we've been going about this the wrong way. Let's get some differing levelled gear (Say, a 60, 70, and 90 set) but scroll the lower ones to make them all approximately the same defense, and then check if the level of your gear has a direct impact. If not, there's still the fact that Levelling plus no defense increase = more damage taken.

I notice no difference due to equip level, the level 60 & 90 female skirts have almost the same defense (52 and 55?) so I have a pair with identical defense that I can swap and nothing changes.

Edit: One last thing. To really cover all possibilities, let's get more fighters in on this, and look at the extra damage taken while rage is in effect

I can't speak for all points, but when I was at 0 base defense and used rage, damage did not change.




Threaten works off the base formula, so you can calculate it like that:
[(w.atk*w.atk) - (w.atk-threaten)*(w.atk-threaten)]/125 = difference, where threaten = number of atk reduced (20 at max).
Simplified (assuming max threaten), this is [8*w.atk-80]/25. For example, with 465 atk (Grims), you get [8*465-80]/25 = 145 reduction. Taking into account Powerguard, this is 87 reduction to the damage you take.



The formula is something like this:
Max (watk^2)/125 - (wdef-k)*something
Min (watk^2)/125*0.945 - (wdef-k)*something
"Something" used to be a consistent 0.43 and k was 0. Now it appears there may be a value of k which depends on your level+class, and "something" is along the lines of (1+str/10000)*([player level - monster level]/100 + 1)*0.5, or something like that.