I said it was an example, the numbers in that are illustrated to show the relationship between Magic Evade, and Magic ACC. The formula functions identically to that of Melee Accuracy vs Evasion. It posses the same base calculations, and likely follows the exact same differential check systems (level gap for example.)
ACC/MACC is divided into 2 basic stats. Skill level and a Stat. Dex/Agi is used in Martial Combat, INT/MND is used in Magical Combat.
EVA/MEVA is divided into 2 basic stats. Skill level and a stat. Agi is used in Martial Combat. MND is used in Magical Combat.
Note: Some believe INT for Black Magic, MND for White Magic, MND and INT also reduce damage taken akin to VIT so it is possible they are separate entities for resistance as well.
To determine your base hit rate you take you ACC and Divide it by the Evasion. To Determine your land rate you take the MACC/MEVA.
I am sure this goes without saying that gear and abilities are also included in this, but I am speaking base mechanics as they function the same regardless of gear and ability variable.
Now that is besides the point. What I want to focus on particularly is your question and I am sorry for the side rant. It seems that you did not follow my example, I apologize for that. I will try and clarify it some maybe. The last line of your post does confuses me some. What I flat out said was nothing like what you wrote. Maybe that was my fault I don't know.
What I said was If I have 500 skill, but hit the land rate cap (of 95%) with only 400 skill being applied, 100 of my skill is counting for nothing. 95% is the cap. Period. However if you (my target) added 50 skill points to your resistance level, I would still be ok because I have 100 Skill that didn't count but now does. So instead of me needing 400 skill to cap, I now need 450. Of my initial 500, 50 is now not being calculated because...95% is the cap. Period. It would take you 100 Resistance to have my 95% cap be broken, because I have 500 skill and only needed 400skill to cap initially...and 95% is the cap. Period.
Or maybe I got confused by what you said, and are asking how do I know that resists and macc are valued 1:1. I don't really know 100%, I did do some testing a while back and established mobs seem to have B skills in Strong elements, vs D skills in weaker elements, but those posts I believe were deleted with RDD. I confirmed that MACC from enhancing magic followed the same 1:1 rule as MACC from other schools. (or to the point that the .9 possibility didn't register as a quantity) and used that testing further to test how mob resist rates correlated to the enspells. I did some work on finding the rate of resistance reduction associated with the enspell 2 line when they came out (I just submitted parse data on that one and had no other influence on the findings.).
But ya its either 1:1 or the .9 possibility. In fact it works the exact same as Melee Hit Rate Calculations, same caps, same floors, same mechanics.
As for a source, pretty well any FFXI site with a decent wiki (BG/FFXIWIKI probably best bets) Contains all the information you will likely need for learning the base mechanics of the game.
I hope that helps.
Edited, Nov 9th 2012 11:56pm by rdmcandie