Originally Posted by
Baconslicer
Sure, so at 22.2k mastery on gear, you'll have the same uptime as in live, with 25% less damage. Uptime today is, what, 50%? 40%? So it's a 10-12% nerf to overall damage.
At mastery below 22.2k, you'll have less uptime, where on live the buff would be smaller. You can do the math if you like, but it'll probably still land in the "10-15% nerf" range.
So "how serious this nerf is" is roughly a 10% dps loss. That's not insignificant, but it's also easily fixable by eg. a 10% buff to the RSK debuff.