empowering stun?

[KY_Jelly]

Well, my fighter is 100% pure meatshield, and as such, my 3 most used skills are taunt, bone slicer, and stun. bone slicer and stun are the two i would use to keep alive (lower mob's DPS so he cant outdamage my pots+stones/the clerics)

bone slicer has a 20second buff effect and 15 second cool time, so thats no big deal. Taunt has a 5 second effect and 20 second cool time.

just wondering if anyone's empowered cool time and buff time on stun, and if so, how much does each point take off/add on the time? I'm trying to figure out if it would be worth the empowerment