Originally Posted by
Zonex
Take a closer look at post 1541
That is the math being ironed out. The Ranking listed is for reforging Mastery -> haste, but from the sims Promdate did, his crit weight was higher, so his calculations for crit gave terror a better ranking. So yeah... Xuen (2/2) is a worse upgrade than Bottle, but better than Terror.
One thing to note, is that H Bottle scales horribly with Item Upgrades, so if you are talking strictly 2/2 the Terror edges out Bottle in the Heroic versions..
Now in the real world, Xuen is going to get you far, its reliable and static, but so is bottle, it has a insane uptime, 20s dura, 45s CD. Terror is a lot of RNG for it to proc when you rly need it but you can take that for what it's worth. It depends on what you feel is better, but if you are going to MT, the difference between Xuen and Terror dwindles, since you'll build stacks of EB when you need it, if you dump EB enough, you shouldn't cap it. Terror is fine.
If you're new to tanking, sure, go for Xuen, its static, its an easy fire and forget, that'll give you help when you likely need it more. Terror takes getting used to, but it is mathematically better. As with the BrM class, you just need to take it with a pinch of salt, and choose what you like and play better with.
PS: If you are calculating without Mastery being reforged, then yes by all means, Xuen is better, but going mastery is a deliberate choice the BrM knows lowers survivability/dps for EH (well thats a sort of survivability as well i guess).