There are a few things I want to bring to your attention.
238 initiative debuff is impossible. This means this person intentionally changed gear or dropped a buff in order to get these values. Highest value is 200, 120 from a SM and 80 from the aSW.
Second, the stat doll does not provide accurate information as the initiative formula was changed in this patch: viewtopic.php?f=42&t=26107
So then, how valuable is the tactic wrist slash and its 80 initiative stackable debuff and is it really as OP as everyone tells me?
Glad you asked, let's delve into some math. Old initiative formula was ((350 / Initiative * 10) - Reduced chance to be crit) this is what the statdoll uses; but as I stated above, this was changed by the RoR devs in a patch. After hitting ourselves about a thousand times out in eataine, we determined that they basically gave everyone 35 initiative for free in the formula. So all of the formulas I use on my spreadsheet use this:
IF(Init < 0, 100, (350 / (Init + 35) * 10)) - Reduced chance to be crit
The IF function is just to make sure that debuffs that drop below zero do not create ridiculous results. Alright the first screenshot here just explains what you are actually looking. Each of these are taken from the spreadsheet that I created for my guild.

Now for the rest of these we need to keep in mind a few things. First, the debuff is only 80 on top of the 120 that can be applied to both sides. So when determining the maximum value of the tactic, we need to look how much difference it creates between the 120 debuff marker, and the 200 debuff marker.

This first screenshot is for 123 initiative. Which is lowest base value of any class. The aSW brings 8% additional critical chance if you have no buffs (only because you can't go over 100%!). 60% if you have a zealot buff. 23% if you have a black orc buff.

This one is for 200, which is a more common value for not naked people. 200 initiative is also suicide for pretty much any character regardless of debuffs. The aSW brings 70% additional critical chance if you have no buffs. 20% if you have a zealot buff. 8% if you have a black orc buff.

This one is for 250 initiative. For some classes this is a small talisman/rp investment, but it is considered the go-to number for initiave (for a reas)on. Under this value, The aSW brings 20% additional critical chance if you have no buffs. 10% if you have a zealot buff. 5% if you have a black orc buff.

This one is for 275 initiative, same as the first screenshot, the one given by another person that I posted up top. Lets see what's REALLY going on in comparison.
The aSW brings 13% additional critical chance if you have no buffs. 7% if you have a zealot buff. 4% if you have a black orc buff.

Let's keep going. 300 initiative, some classes get this value without trying, but only a few. The aSW brings 10% additional critical chance if you have no buffs. 6% if you have a zealot buff. 3% if you have a black orc buff.
=====Conclusion=====
Shadow warrior stacking initiave debuff is only exceptionally powerful if you have less than 250 initiative or if you do not have a black orc or zealot.
The assault shadow warrior is a melee dps spec that only has use in small scale engagements due to its limited AoE. So looking at the above data from a 6v6 environment perspective, you will almost always have one of those two classes for the buffs needed to counter it.





