I'll post it here again since it's nearly the same discussion so it's relavent. I've never looked at the data mined source code so I won't claim to know what the truth of the matter is but here are some examples from the two way people have discussed.
My previous post from the other thread...
TL;DR some different calculations of chances for debufs to land or not... just because ¯\_(ツ)_/¯
TarlaBille wrote: »
"OK it's technically wrong but functionally the same thing. Who cares."
I know this doesn't mater at all but if you did want to calculate exact debuf rates then it's important to note that functionally it's not the same thing at all. Taking two examples in which the chance to apply effect case is met here is what you could expect from the two different versions of the calculation...
NB: I've called this (100 + Potency - Tenacity)/100 equation given above "chance to apply"
1) Probability of debuf fail = max(0.15, (Tenacity - Potency)/100)
2) Probability of debuf fail = 1 - (chance to apply * (1 - chance to resist))
= 1 - (((100 + Potency - Tenacity)/100) * 0.85)
Take a potency of 90 and a tenacity of 180 (e.g. a palp vs jedi type case)
in case 1) Probability of debuf fail = 0.9
in case 2) Probability of debuf fail = 0.915
Second case potency = 50, and tenacity = 55 (e.g. more traditional debuff toon vs common tenacity pre new mods)
in case 1) Probability of debuf fail = 0.15
in case 2) Probability of debuf fail = 0.1925
No idea if it's actually case 1 or 2 in reality but the second seems like a complete mess of a method to use.
Regarding this comment however,
Whatelse73 wrote: »
"If I can't do a mass stun of a whole team more than once or twice a week (3 mass stuns a match, times 5 a day times seven days = 105 attempts?) with my 150+ potency EP, then something is broken."
lets assume EP has infinite potency and the opponent has zero tenacity so best case scenario. Chance of landing 5 stuns is going to be (0.7*0.85)^5 = 0.075 so about 7 in every 100 attempts. I'd consider toning it down a bit on your potency to be honest because apart from bastila teams the extra that you are modding for is mostly wasted.