I'm not sure I agree with either of your two spec's, but I guess thats completely up for debate.
Don't forget about miss.Well, there are other threads that can help here with this, but the short answer is when you combine Dodge+Parry+Block, an ideal % of the combined is 77.4%. Think of it this way. I have 13.4% Dodge. I have 14.0% Parry and I have 50.0% Block rating from my skills plus Mastery ( mastery increases block ). Total is 77.4%.
So at 77.4% i'm still not getting 100% avoidance. BUT, hit shield block for an additional 25% and you've just hit the magic 102.4% number.
Also... I may be completely wrong on this, but the spec I like to use is the following. I dont really like the Thunderstruck talent as I only thunderclap to keep up debuff, so not very often. I don't use shockwave, unless there are adds. I guess its just my play style.
Just one last thing I thought I would mention
I find that instead of berserker rage, I swap between CS and BS depending on the group make up. If we are lacking one or the other, I swap to that minor glyph. Yes, we refresh it pretty often... but there are many times where raid members are out of range when its refreshed and this helps keep it up on everyone.Minor – Beserker Rage – 5 rage. Might as well
Minor – Intimidating Shout – Another Oh S**T, when mobs get unruly; fear them.
Minor – Demo Shout – Good all around way to reduce inbound damage ( and help heals )
Optional Minor – Battle or Command Shout - This really only helps the other members of the group. Our main reason for hitting either is for the on demand rage. Is it selfish, yes.