^thats not what they are referring to when they say damage can be pulled out of raid buffs. If you make inner release CD 40 seconds you get more uses out of it but still the use that really matters is the one in the burst window

“Pulling potency out of the burst window” means that skulls that could reasonably be put into the burst window (for example DNC’s feathers) it’s always optimal to put them in the burst window, same as any skill that has a slightly odd CD, it’s always best to save it for the burst window (or skills like phlegma that have 2 charges, you should always be putting 2-3 charges inside the burst window)

If there was a compensation mechanism for damage potentially lost by using skills outside the burst window if you had the skull to utilise it (for example ShB enchanted reprise) then it would add a lot of depth to a lot of classes