If you compare Oblation to what the other three tanks got, then...well, there is no comparison as it is laughable.
I am sure everyone here was expecting Oblation to be the upgraded form of TBN, like Bloodwhetting does for Raw Intuition, Holy Sheltron does for Sheltron, and Heart of Corundum does for Heart of Stone. They all got new looks and uses when you use them and are correctly timed, but DRK you ask - what did they get? GNB's Camouflage without the parry added onto it. TBN..is another topic as it still shares with your damage resource, but that is another story for another day.
Now - before some people jump me and start ranting (he said, she said), getting a charge every minute vs. GNB's version is 30 seconds (60 seconds per charge vs. 90 seconds for single use) has its pro's and cons, however, the difference between why GNB's is 30 seconds longer is what I assume is due to the .50 (50%) parry rate.
Off-topic: I will be quite honest as sometimes I forget Oblation is there even along with Dark Missionary (and HoL) as compared to Shake and Holy Veil, the latter is so much better, especially combined with Passage of Arms (15% mit) the PLD gives + any extra mitigation Shake can add on to it; now that, that saves lives.
