WARNING: The following post contains data, math, and all around nerdery. Anyone who doesn’t not wish to be exposed to long winded mathematical rambling, click here.
Now then, the chart you’re looking at is the results from my initial Dr. Boom Growl testing, with the hunter’s RAP on the x-axis and the threat per Growl on the y-axis. At first it follows a pattern we’ve come to know and expect, a base value that’s used below a certain RAP value. With RAP values of 2189, 2592, 2911, 2994, and 3010, testing showed Threat values of 1548, 1560, 1551, 1550, and 1550 respectively, very strongly pointing to a base Growl value between 1550 (the median) and 1552 (the mean). Then, also as expected, after reaching the RAP threshold, somewhere between 3010 and 3029, a modifier kicks in increasing the amount of threat generated by Growl for each additional point of RAP.
What’s the disconnect then? The game is using the wrong formula to calculate Growl. It should be multiplying the RAP in excess of the threshold by some value, then adding that to the base threat. Using the data, the formula for threat with a RAP above 3020 SHOULD be
Threat = 1550 + (RAP – 3020)(1.425)
or simplified to
Threat = 1.425 x RAP – 2829.
Instead it appears that the formula used in game for RAP above the threshold is assuming the wrong base threat. The true formula being used is
Threat = 1258 + (RAP-3020)(1.425)
or simplified to
Threat = 1.425 x RAP – 3121
So what should we take from all this? First from a practical stand point, don’t have a RAP of 3020 to 3300. A RAP in this range would result in less threat from Growl than if you had a RAP of 3020 or less. If you have a RAP in this range, use it as an opportunity to switch out some AP for more stamina. Secondly, either we’re getting more more threat below the RAP threshold than we should, or 300-350 less above it than we should. I’ve created on thread on the official WoW bug forums which can be found here. Feel free to head on over and bump it to make sure we get this thing fixed.
Note: All numbers presented here are estimations with a certain margin of error and no number in this post should be used as a hard rule, just a general guideline.