I was testing my pull out on dummies, i have the 4 set and the stacking fable trinket.
What i found was that my first 2-3 raging blows tend to hit for roughly 400k but then the last 2 seemed to drastically drop down to around 250k.
Things to note are that everything crit as i have the 4 set, i was enraged the whole time obviously, but i was confused because i was tracking my attack power and it was consistently rising due to using the fabled trinket.
That's why i'm just curious what actually affects the damage of raging blow as despite having a higher attack power, my last couple raging blows hit for far lower.