Originally Posted by
Wyand1337
Guess what, Incinerate (the main filler-spell of destruction warlocks) is also a base 2.0 sec cast. As a matter of fact though it wouldn't even be possible to keep it from gcd cappinng during gem procc + heroism. I'm sitting at 7k haste right now and have .85 sec incinerates during either heroism or the gem procc. Whenever both of them are up, incinerate is more like a .5 sec cast.
The key word here is "backdraft", different classes just work different.
As a consequence, despite the lower coefficient for fire, the gem is even worse and less epic for destruction than it is for fire. It's not just bad, the procc itself is actually annoying, as it destroys any fluent rotation. But I guess Blizzard won't give us a boomkin-like uptime of the gem (and to be honest, playing with the severely lowered procc-rate after the hotfix is actually more fun and pleasent as destruction).
Well.. it's awesome (and maybe too awesome) for affliction at least.