Bursting was released doing significantly less damage on live servers after Patch 10.2.6, but this has now been hotfixed.
Before the Patch on the last Bursting week, Bursting did 32748 base damage per stack at a difficulty of +20 or above. After the Patch, Bursting does 13839 per character.
Around 9:30 PM PST, this was hotfixed and Bursting once again does 32748 base damage per stack. Congratulations if you did some keys since the Patch. They were much easier than intended for a good chunk of today!