Originally Posted by
Phoenicia
It is not that timing IB is hard. NOTHING in this game is "hard"
If for whatever you used a WS (locking yourself in GCD) while boss is casting a tank buster, you are more likely gonna be hit by the full damage of the tank buster before you can use IB. Inversely, you pop IB too early thinking the tank buster is coming only to notice the cast bar beginning on the last second of IB's duration. Yes you can fix it with Infuriate. But that's a waste of CD, which is a price (punishment) you pay for a mistake.
On the other hand, as a PLD/DRK, you just pop CD between GCDs and you're set.