If I got it right, SB has to add (140 * Predatory Strikes) * HotW * Naturalist - if it scales.
So the Rake tick damage on an undead mob must be (140 * 1.2) * 0.06 * 1.1 * 1.1 = 12.1968 higher. Correct now?
If it just adds (SB-AP) * HotW * Naturalist, then it does not scale.
Edit:
Results
1111 Dmg per Rake tick on an Undead
1099 Dmg per Rake tick on an non-Undead
Undead #1:
Imageshack - rakeundead1screenshot02.jpg
Undead: #2:
Imageshack - rakeundead2screenshot02.jpg
Non-undead #1:
Imageshack - rakenonundead1screensho.jpg
Non-undead#2:
Imageshack - rakenonundead2screensho.jpg
Scourgebane:
http://img17.imageshack.us/img17/730...1310020822.jpg
No 4xT10, no proc trinkets, rings, idols, amulets.
Difference: 12 DMG => Scourgebane works?!
Manually adding Scourgebane to Rawr giving static 140 AP adds 21 DPS more than Mongoose (shortly followed by Berserking)
Edit: Before many jump on the bandwagon - testing in Simulationcraft shows Mongoose > Scourgebane > Berserking at some BiS levels, same for my current item setup (early/mid ICC-mix). So: before you enchant this, test it by modifying simulationcrafts configuration in before simulation like " enchant=140ap,weapon... " where your main hand appears.