On the subject of Glyphs, I'm loathe to recommend anything over something else (except for primes, and I certainly hope we don't need to debate those). Here's why: It's all situational. This part here?
Is absolutely correct. Maybe your prot warrior doesn't make stacking sunders a priority. Maybe you don't have a prot warrior and you need to do it yourself. Heck, maybe your prot warrior is fine -- you'd still stack it a second or two factor. There are totally situations where that's valid.And on the glyph of heroic throw. With devastate being so low on the prot warriors threat rotation. being able to add a stack at the start of the fight, and refresh it here or there in the fight, it doesnt seem like that bad of an idea to pick this up.
But there are also situations where other glyphs are more valid. Maybe you're doing a fight with lots of adds that are dying and your healers are having trouble, and maybe that means that you should pick up Glyph of Victory Rush. That's valid too. But if I say in the guide "You should get Glyph of Heroic Throw," I might convince someone otherwise, and then they'd make the wrong choice. I'm not going to do that, because the benefit is so minute, and the potential downside is much greater.
The same goes for Berserker Rage. Yeah, it might be the best glyph, but that's min/maxing to a ridiculous extent, and not enough for me to recommend it over something else. Like I mentioned in the guide, I don't personally use it (which isn't to say you shouldn't either). I specifically mention in the section that it's a "popular choice," but I feel the trap I found myself in may be useful information for someone considering using it, which is why I threw it in there.