Small anecdotal thing about Impale: In my limited testing i've found it to be rather useless with the current rank cap and the full sav spec. The damage from behind is marginally better than anytimer (although with less AP cost) and falls behind the armor debuff, the wounds debuff and the AP debuff. And that is in the best case scenario of actually being behind the target. My rotation in Marauder is usually wounds debuff into armor debuff into healing debuff into AP drain. So only then the armor ignore from Impale kicks in. If the Marauder uses it.Omegus wrote:IMO at the moment if you play a light armour class then stacking armour generally isn't worth it - between weapon skill and debuffs (both -armour and ignore armour) your mitigation will be almost zero and it doesn't provide any additional protection against magic.
Armour
Devastator: 795 armour (from Arsenel of War's DB)
Armour Talis: 7x 99 (example used in OP) = 693
Potion: 577 (blue R30)
Total: 795 + 693 + 577 = 2065 armour, or 58.7% mitigation.
vs Marauder (same figures should apply to WL)
Cutting Claw: Debuff 1360 (I asked a sav-specced R32 mara in IC)
Impale: Ignores 519 armour if behind (same sav-specced marauder, so little-no mastery bonus)
Total armour bypassed: 1879 before weapon skill.
Also, if you use numbers that suggest you are always armor debuffed, you shouldn't ignore the armor buff from WP/DoK or the Armor buff from Zealots/RP in your calculation