I just did some calculations because i was bored and quite interested by AOP's question on proficiency vs vigor.
In theory, the +3686 vigor is more powerful than the +150 proficiency.
The gearscore is calculated by P(1+(S/2000) [Thanks Zuri]
Where P is primary stats - vigor and stamina, and S is secondary or special stats.
at full 71 gear you will have approximately 88k gearscore depending on your astral drops.
This gearscore is calculated on the basis of 46,073 primary and roughly 1,840 secondary
we will use these numbers for the example calculations.
Without trinket effect.
46073(1+(1840/2000)) = 88460
With epic non-cs effect.
(46073+3686)(1+(1840/2000)) = 95537
With rare cs effect. [offense only]
46073(1+((1840+150)/2000)) = 91915
With rare cs effect. [off+def]
46073(1+((1840+300)/2000)) = 95371
You can draw your own conclusion.
ty for doing the math! very interesting!
ALSO, CS trinket (after you get it once) is available (shared) to ALL your reincarnations to play with from the beginning levels. This part is also important to note and remember.
good idea to point this out; go to goblinbanker NPC and select the appropriate dialog; he then will give you as many of these trinkets as you wish (bound) into your boutique tab
then switch to reinc and just equip it