Comparative between rank 5 talents (rune regeneration) :
First, I want to mention that I'm well aware about the fact that RC >> RE and BT. The purpose of this post is to formalize it properly in order to be absolutely sure about that fact and (more importantly), to be able to calculate the talents' efficiency as soon as the figures vary during the bêta.
Also, I obviously consider that the CD on BT is a glitch. (Having the 5.0 BT working with 1 min CD makes absolutely no sense, as it will make it so so far behind RC and RE).
I will compare each talent in term of efficiency, but will begin to calculate the efficiency by rune : E = (rune gained) / (RP-ability used). The reason why I calculate this value first, is the trickiness of RC, as you'll see. ^_^
Blood Tap : Each DC / RS /FS gives a Blood Charge. Using BT with 3 charges gives a fully depleted rune.
→ Very easy :
E = 1 / 3 (one rune gained for 3 RP-abilities used)
Runic Empowerment : Each FS / RS / DC has 45% chance to give a fully depleted rune.
So 0.45 rune for 1 RP-ability gives :
→
E = 1 / 2.22
Runic Corruption : Each FS / RS / DC increase by 100% rune regeneration for 3 seconds.
This one is tricky. For the sake of having an easy calculation (for now !), let's say the rune regeneration time is 8s. In order to gain the equivalent of one rune, we have to have the RC buff up during 8 seconds (so during this time, a rune that would fully depleted -16 sec cd- would recharge in 8 seconds, ie an equivalent gain of one rune).
/!\ Don't forget that we calculate efficiency by rune so I think as RC affecting only ONE depleted rune for the moment.
In order to have RC up for 8 seconds, we should have X procs. X = 8 / 3 = 2.67
→
E = 1 / 2.67
So we can see that
by rune, RE > RC. (And as expected, BT is pretty shitty.)
However, it's quite obvious that most of the time, when you DS / RS / FS, you'll have more than 0 or 1 rune recharging. Let's say we have 3 runes recharging when using a RP-ability (seems pretty accurate as an average value) : E' = 3 x 1/2.67 = 1.12 (using one RP-ability gives more than one rune !)
Now basically, we can see that RC >>> other talents. However, this still is a particular case when t = 8s (recharging rune time) and N = 3 (number of runes recharging when DC/FS/RS -ing).
Generalisation :
The aime of this part is to be able to have the theorical tool to immediatly compare BT, RE and RC when the values into the talents will vary (as it will likely happen during the beta phase).
B : blood charge necessary to use BT
R : RE proc chance
C : RC proc chance
Tc : RC buff duration
t : rune recharging time
N : number of rune recharging
At the moment, if the beta would go out with current values, we'd have : B = 3 ; R = 0.45 ; C = 1 ; Tc = 3s.
t depends of your character, and N has to be averaged (imo N = 3 is OK but it's not important for now).
The three efficiencies are :
- BT : E = 1 / B
- RE : E' = R (you can calculate 1/R to write E' = 1 / (1/R) to comparate more easily to the others, as done above)
- RC : E" = (C x Tc x N) / t
How to compare RE and RC :
As they might be the ones in competition, let's see how to compare them. If we consider that N is known (or a value for N is generally known as a good average), we want to know for a value of t (rune recharging time) depending on your gear / gems / enchants, if your character will benefit the most of RE or RC.
We'll then seek t = t', time for which :
E' = E"
<=> 1 / R = t' / (C x Tc x N)
<=>
t' = C x Tc x N / R
If t > t' on your character sheet, you'll want to spec RE.
If t < t' on your character sheet, you'll want to spec RC.
Example with current values :
We have :R = 0.45 ; C = 1 ; Tc = 3s.
- t' = 1 x 3 x 1 / 0.45 = 6.67 s, with N = 1
- t' = 1 x 3 x 2 / 0.45 = 13.33 s, with N = 2
- t' = 1 x 3 x 3 / 0.45 = 20 s, with N = 3
- t' = 1 x 3 x 4 / 0.45 = 26.67 s, with N = 4
- t' = 1 x 3 x 5 / 0.45 = 33.33 s, with N = 5
- t' = 1 x 3 x 6 / 0.45 = 40 s, with N = 6
Obviously, unless you consider N = 1 (which doesn't seem realistic at all), RC is by far more efficient than RE.
All the calculation may seem totally unecessary, but keep in mind that when they'll change the values of B, R, C or Tc, we might have a use of this !
Feel free to point out any mistake in the calculation or in the formalisation.
