GU47 update: https://forums.daybreakgames.com/dc...ikes-with-pictures.176413/page-8#post-3261184 All analyses of Core Strength and Penetrating Strikes I've seen have either been wrong or done without knowing that Core Strength adds its 10% bonus to your damage modifier, not your damage. What I mean is that rather than multiplying your damage by 110%, it turns your 35% damage modifier into 45%, 50% to 60%, etc. So your actual damage increase with Core Strength varies depending on whatever modifier you have at the time. Another mistake I've seen - a 10% armor reduction does not mean a 10% increase in damage. I already wrote some of this stuff in the gadgets guide but here I have pretty graphics to help show what I mean. All of my examples assume you're level 30 fighting level 30 mobs or players. Damage RoleRecommendation: Penetrating Strikes for Damage role in PvE and PvP. As I said, Core Strength adds 10% to your current modifier. So your damage increase with a 35% modifier on you would be 145%/135% = +7.4%. As your damage modifier increases, Core Strength is less and less effective. With a 50% modifier, the damage increase would be 160%/150% = +6.7%. As 35% is the minimum modifier you can have, we'll take +7.4% as the max damage increase for Core Strength. Penetrating Strikes ignores 528 defense or 7.5% armor in PvE. The actual damage increase depends on the defense of the mob, but Penetrating Strikes gets better as defense goes up so all we have to do is look at the base mob defense. All mobs have a minimum of 15% armor or 1056 defense. Penetrating Strikes ignores half of this, turning 15% damage reduction into 7.5% damage reduction. Then the damage increase would be (100% - 7.5%) / (100% - 15%) = +8.8%. And it only gets better from here. The Trigon DLC mobs I tested have 2600 defense or about 37% armor, so the damage increase on these mobs would be 70.5%/63% = +12%. Core Strength gives a maximum damage increase of +7.4% while Penetrating Strikes gives a minimum damage increase of +8.8%, so Penetrating Strikes is better for damage roles in PvE. In PvP, Penetrating Strikes ignores 774 toughness or 11% armor. We'll just use the T0/T1 CR77 cash gear for the minimum toughness here. It gives about 1320 toughness or 18.8% armor. Then the damage increase ignoring 11% armor would be +13.5%. Other RolesRecommendation: Core Strength for Healer and Tank roles in PvE and PvP. Penetrating Strikes for Controller role in PvP, either mod depending on the situation for PvE. The other roles don't have damage modifiers on their powers so it's simpler here. Controllers get an actual +10% damage increase and Heals/Tank get their damage penalty removed. Healers get a 100%/75% = +33% damage increase while Tanks get a 100%/80% = +25% damage increase. So Healers should always stick with Core Strength and Tanks should go with Core Strength (unless they're spec'd to specifically fight 4k+ toughness buffed ice tanks). Controllers should use Penetrating Strikes in PvP but for PvE, it depends on the situation since Penetrating Strikes overtakes Core Strength at around 1762 defense. I said earlier that Trigon DLC mobs have 2600 defense so PS will be better there. But Paradox/Nexus mobs and bosses have the base 15% armor so Core Strength will be better there. If you don't know the defense of the NPCs you're fighting, just go with Core Strength as it won't matter much anyways for a controller. Damage Role (with Defense Debuff)Recommendation: Penetrating Strikes for Damage role in PvE. The controller defense debuff will change things slightly, but not too much. It subtracts 493 defense or 7% armor from NPCs. This is also additive so together with Penetrating Strikes, mobs with base defense will be left at 15% - 7.5% - 7% = 0.5% armor. Penetrating Strikes + defense debuff will then give a minimum of 99.5%/85% = +17% damage increase. With a 35% damage modifier, Core Strength with the defense debuff will give a (145%/135%) * (92%/85%) = +16.3% damage increase. With a 50% damage modifier, it would be a (160%/150%) * (92%/85%) = +15.5% damage increase. The gap is closer but Penetrating Strikes still wins. The defense debuff gets better with higher mob defense like PS, but Core Strength with a 35% modifier will never catch up to Penetrating Strikes. Other Roles (with Defense Debuff)Recommendation: Core Strength for Healer and Tank roles in PvE. Core Strength for Controller role in PvE (but may still depend on the situation). With Core Strength and a defense debuff on a mob with base defense, Controllers will get a (110%/100%) * (92%/85%) = +19% damage increase. Healers will get a (100%/75%) * (92%/85%) = +44% damage increase. Tanks will get a (100%/80%) * (92%/85%) = +35% damage increase. Penetrating Strikes will be the same as above, giving a +17% damage increase. Healers and Tanks should prefer Core Strength still in PvE. Controllers still start off with Core Strength being better but the point where Penetrating Strikes overtakes Core Strength is further down at about 2225 defense. So I still recommend Core Strength just for convenience since mobs don't get too much more defense than this. Damage Role (with Toughness Debuff)Recommendation: Penetrating Strikes for Damage role in PvP. The controller toughness debuff subtracts 704 toughness or 10% armor from other players. Together with Penetrating Strikes, all of the toughness from the PvP cash gear is ignored. Then Penetrating Strikes + toughness debuff will give a +23% damage increase on the 1320 toughness cash gear. With a 35% damage modifier, Core Strength with the toughness debuff will give a +20.6% damage increase. With a 50% damage modifier, it would be a +19.8% damage increase. Again, Core Strength won't catch up so Penetrating Strikes is better in PvP with the controller toughness debuff. Other Roles (with Toughness Debuff)Recommendation: Core Strength for Healer and Tank roles in PvP. Penetrating Strikes for Controller role in PvP. With Core Strength and a toughness debuff on players with cash PvP gear, Controllers will get a = +23.5% damage increase. Healers will get a +50% damage increase. Tanks will get a +40% damage increase. Penetrating Strikes will be the same as above, giving a +23% damage increase. Healers and Tanks should go with Core Strength still in PvP when teaming with controllers. Controllers start off at about the same place with both mods but Penetrating Strikes improves faster and will be better. Thanks to this post https://forums.daybreakgames.com/dcuo/index.php?threads/sores-nature-guide.74/page-30#post-1943158 for info about the controller debuff.