After raiding Mogu'shan Vaults last night I have to get others opinions. Do you feel that Guardian threat is not up to par?
With Berserk popped (or Incarnation, whichever I opt to use) I can keep up with our Protection Paladin, but his constant threat is just so much more than mine. It was only an issue during Feng. After epicenters when we would run back in, I would taunt (important: after epicenter, so it did not miss) and his auto attacks would rip threat, unless I got a lucky mangle >crit<, a miss/dodge/parry or a non-crit would not do.
Also, his aoe threat was significantly higher than mine (though that could have been tricks and MD being used on him.)
I feel like too much of our threat is dumped into mangle and not enough into lacerate and thrash's initial hit.