I might move this to Game Mechanics once I make this better and make sure it's all correct, but I want to see if what I've done so far is correct.
Everything uses 100~100 damage range so you'll always hit 100. Calculated damage shows you a %change due to enemy PDR. Enemy PDR is given at 50% and 70% as those are the 2 most common PDRs you find for bosses. i believe for anything less than 50%, boss damage is always superior but in those cases, if you are reading this thread, your damage is probably high enough that those types of bosses don't matter.
Ignore def calculations
Total ignore def is additive
Ambition ignore def is treated as 0% at all times. Ambition ignore def should be considered if your two numbers for boss vs ignore are relatively close to one another.
There is no cap for ignore def except for 100% ignore def: I heard rumors there's a 50% cap or something, can anyone confirm/deny?
[(ignore * PDR) * dmg] + [dmg * (1 - PDR)]
Could be simplified by distributing out "dmg"
Spear = 20% ignore def and is additive: Can someone see if this is really true or if it's -20% like the skill description reads e.g. legendary spear on a 70% PDR empress would drop her PDR to 50%
Boss damage calculations
Total boss damage is additive
Stuff like DS skill link, etc do not matter as they effect both equally i.e. if you are seeing if A > B and you do 1.1 * A > 1.1 * B, you still end up testing A > B
(1+boss%) * (1-PDR) * dmg
Calculating other sources of ignore def for other classes e.g. Hero
Simply change the %ignore to match your real total ignore def
Calculating in Defense Break for Mercedes
Assuming it's max level (20) or with decent CO (21)
break = (2 * skill level)% i.e. 40% and 42% for the above cases respectively
modified damage refers to the damage you deal based on ignore def, boss dmg, and PDR. These numbers are in columns G and H of the above chart
(1-break) * (modified damage) + (break) * dmg
Conclusion for Mercedes
Boss damage is always better than ignore def if
- max defense break (or X defense break)
- legendary spear + leafre codex is active