Character: Gwpally Server: Arthas
My scale factors from a week ago:
Str Agi AP Exp(tocap) Hit(tocap) Crit Haste Mastery Wdps
3.1314 1.5549 1.3841 3.5110 4.7574 1.8192 1.2259 1.9403 10.8429
Think for a second about what each stat actually does. Crit increases the damage of every ability, including Gurthalak which was what you were asking about. A critical strike will proc more mastery further increasing the damage of a crit. Haste on the other hand increases auto attack damage and make Censure tick more often. Many bring up it reduces the cooldown of CS, but it is irrelevant. Lowering the CD of CS from 3.9 to 3.6 seconds will do nothing for you. The first CS brings you to a 1.5second global. The following attack will either bring you to 2.5 or 3 seconds depending on what was cast. The next global after will bring you to 3.5, 4, or 4.5 seconds from the first Crusader Strike. If your CS cooldown is less than 4 seconds there is practically no benefit to it from haste. Even at the 3.5 second CD threshold, circumstances rarely take advantage of this. You would have to use CS,Exo,Con or another similar combo to end at a 3.5 seconds. More often than not your haste is getting no benefit.