From everything I understand about the hate list, aggro is aggro. If a mob turns to face you after a proc, it's because pre-proc you were 2+ on the hatelist and after the proc you improved to #1.
http://everquest.allakhazam.com/wiki...ms_Aggro_Procs has a list of what all the hate values should be. Stuns are 400 hate and direct damage is 1, so any Ykesha should be 475 hate per proc. Veldrak's Shortblade should be 579, and the Blade of Strategy should be 600 hate. Unfortunately the table doesn't have an entry for poison based weapons like the Blade of the Black Dragon Eye.
If you think the epic proc is bugged, it would be fairly easy to measure exactly how much hate the epic gives. You'll need 3 people:
1. A puller to tag the mob (so you don't have to worry about initial aggro)
2. Once in camp, the warrior melees until the epic procs (I suggest fists in the offhand)
3. As soon as the warrior gets aggro, he stops attacking and another class attacks without proccing weapons weapons until HE draws aggro.
Swing (hit or miss) aggro is weapon-damage + damage-bonus, so our epic warrior gets 25 hate for each primary swing and 1 hate for each offhand punch. Let's say we have an epic/sos monk for our third man, who gets 20 hate for each primary punch and 17 hate for each offhand crush. If for example our stats looked like:
War: 14 swings, 8 punches, 1 epic proc
Mnk: 30 punches, 18 crushes
we could write: 14*25+8*1+PROC = 30*20 + 18*17 which implies in this imaginary test (if I am doing my mental math right) that the proc in question is 548 hate. In fact it is easy to do this test for any proccing weapon and determine its exact hate value.