The truth about crit rate

There were many speculations lately about how critical works in Wartune. Since we were able to reverse-engineer most other aspects of the game's combat system, this mystery needed to be resolved as well. In Doomlord, critical formulae is pretty simple, so I suspected it's not as complicated either here.

First of all, testing crit rate needs much more testing than figuring out a formulae. And even after a lot of test, the numbers won't be accurate. I did a LOT of testing with only 3 crit values: 6848, 7948 and 11383 vs many different opponents. And I still can't give an exact formulae, but now I know how it works.

We always knew that chance to crit has another component besides the value of crit. People said the higher their lvl / BR, the more crit they needed. We also knew that vs WB, you will crit a lot even with a low critical. I suspected that this mysterious second component is the opponent's level. After my experiments, it looks like this is true.

Look at the table. With the lower crit, I had still a crit rate of approx. 80% vs world boss. What is more important, I had similar crit rate vs. Iris in sylph atoll, who are lvl 50 like the World boss. Also it is obvious, that I crited less often vs higher level opponents. The third thing I noticed that although my crit increased, the crit rate did not go beyond 80% vs the lower-level monsters (I tested only with mage, so the cap for archers can be higher). 

So based on this data, I can say:

1.) Crit rate is capped at 80% for mages. As soon as you begin critting at 80% vs lvl 80 opponents (at crit 9k? or 10k?) there is no point in increasing your critical further, unless your opponent has a crit reduce effect (like guardian angel).

2.) Crit rate depends most likely on target's level. The higher their level, the lower the crit rate.

3.) Some additional modifiers can lower the crit rate. Like a knight's -5% crit bonus, which can apply to "knight class" monsters too (you see in the table, crit vs the first lych boss, which is lvl 72 like the rest, but knight class, is obviously lower), or the modifier in moonevil.

4.) If you have determination 10 and 7k+ crit, you should use crit instead of enchanted will destroyer, the extra damage compensates even the extra damage you take.

5.) Accept that random has a huge role in crits. (Notice I had lower average crit rate in Iris atoll with higher crit?) Sometimes you always crit, sometimes you crit much less. There is no bug. It's just luck :)

So I suspect that the formulae is somehing like this:
MIN (critical * X - target's level * Y - modifiers (knight -5%, guardian angel, etc) ) , 80)%

Please let me know if you collected any data which can cofirm or contradict what I have now :) Thanks!