To answer the original question here:
You are correct in that each Warp Core Stabilizers counters 1 point of warp disruption.
Regarding the things that cause warp disruption:
- Warp Disruptors (light blue) apply 1 point of disruption
- Warp Scramblers (dark blue) apply 2 points of disruption AND shut down MicroWarpdrives and MicroJumpdrives.
There are faction/deadspace variants that add an additional point of warp disruption.
On top of this… there are two other forms of warp disruption:
Warp Disruption Bubbles: Only found in 0.0 space and below, they are an Area of Effect Warp Disruptor that applies “infinite” warp disruption to any ship within its sphere. MicroWarpdrives and MicroJumpdrives still function within it.
Focused Warp Disruption Generators: Only available on Heavy Interdictors, they are basically a “long range” version of a Warp Scrambler with “infinite” warp disruption strength.
As for whether you should fit Warp Core Stabilizers to your ship… the following adage applies:
“Warp Core Stabilizers may save you today, but they won’t save you tomorrow. Or ever again.”
(translation: they are an unreliable means of avoiding danger and there are other ways that can keep you just as safe without cutting into the effectiveness of your ship in other areas)