Originally Posted by
Shieldarm
I never said 12s up, now did I? It has a 12 second CD, and a 6 second duration. What that means, is that every 12 seconds, I can activate shield barrier. It will be up for 6 seconds, then fade. 6 seconds later, the cool down will be over. I can then activate it again, for another 6 seconds of Shield Block.
As for healing, you're right. I haven't healed for a specifically mastery geared prot warrior, compared to a specifically crit geared prot warrior. I was speaking in general terms, to spike, which crit results in, being more stressful and difficult to heal than smooth, which mastery results in.
And what I was referring to, as far as taking into account what you said, us specifically about gear. As I'm not at home at my computer, my tools are limited right now. So, I went to ask mr robot, and let it build a generic prot set. It put crit at .6, and mastery at .57. Crit had about 23% parry, and 36% mastery. I then swapped them, to .6 mastery, .57 crit. It went to 21% parry, and 42% mastery. 6% gain for 2% loss.
Also, as said, mastery results in higher attack power. Higher attack power means higher barriers. While barrier isn't great, its better than nothing, and crit will provide you no better static mitigation than mastery would against magic damage. Both of them are useless against it without the use of barrier, in which crit is unreliable compared to mastery, as it only provides a slim chance to give more weaker barriers, than master's stronger barriers.