The problem, fundamentally speaking, is that while the damage reduction on Titan's Grip is annoying you're also gaining the effects of Two-Handed Weapon Specialization, which ends up canceling much of it out. Going 25 points into Arms sounds fine, but what exactly do you put those points -into- with a 1H build? You end up grabbing Imp. Overpower and Taste for Blood since there's just nothing else to buy, and those talents are... not exactly spectacular for Fury. Even relatively mediocre talents like Unending Fury or Precision (assuming you're above 8% without it) are far better than points which buy you nothing. A Fury/arms/prot build (15/48/8) to grab Incite runs into the same fundamental problem; 15% more crit on HS/Cleave is extremely good for three talent points, but somewhat less so for 8.

The other problem is just the massive stat differential. 2x Havoc's Call (LK25H 1H Axe) gives you a total of ~519 non-Stamina stat points; 2x Glorenzelg (LK25H 2H Sword) gives you a total of ~984. Even factoring in the difference between AGI-itemized weapons and STR-itemized weapons, you're losing an absolutely massive amount of stats; adding another 2Her is roughly equivalent to being able to wear an additional two rings, and that's ignoring the damage boost you get out of both a higher normalization value for Whirlwind/Slam and gaining a ~1000 AP bonus directly to weapon damage.

I got the same results using Landsoul's spreadsheet. I'm now running Mongoose on OH and after some more upgrades will potentially use Executioner, depending on how my stats scale. Berserking, Mongoose, and Executioner all seem to be neck in neck for total DPS gains, and at one point in gear level it's going to come down to preference, not to mention that Mongoose will help on cleave fights more.

Myself, I think I'll be going with Mongoose for OH. It seems Berserking is still best for MH, though I would bet it's subject to change with gear level. I manipulated some of my stat values and the gap between Berserking and the other enchants for MH was closing. We should keep an eye on how our numbers change (both in-game and on spreadsheet) with different enchants. Food for thought.

There was math done on this back in Ulduar if you look back a few dozen pages. If used correctly it's a noticeable increase in DPS. I think I saw someone mention that Landsoul has even incorporated it into the spreadsheet (which is awesome!).

With current gear availble I doubt executioner Is a viable option, unless for very specific gear setup. The itemztion in icc (alot of ArP+expertise/hit, insted of the "normal" crit+expertise/hit/ArP) makes it very easy to hardcap ArP even without top notch gear, and no matter how you look at it hardcaping ArP is better then softcapping it with executioner.

executioner is a transitional enchant, just like mongoose. If you are approximately 120 arp off the hardcap executioner will come out ahead on your main hand. Similarly if you have room on crit cap, mongoose may be a better off hand. Once you hard cap arp, and assuming decent overall gear balance, double berserking will win out again.

You're logged out on your tanking gear,but I'm going to assume you're over the yellow hitcap and not white.

You have to consider precision pushes your crit cap higher,so depending on your gear,dropping precision might mean losing crit as well.

Other than that,imp execute is a very small DPS increase as you can only use it as a filler and you should not have enrage spec'd unless it is for a specific fight,seeing as it doesn't proc at all on some fights.

If I were you,I'd stick with precision,unless you're somehow hardcapped on hit which is pretty hard to believe-if you're hitcapped on whites you have problems beyond the talent themselves,namely gearing /gemming issues.

Stick with precision, drop a point out of Imp. Berserker Rage to pick up Heroic Fury.

Actually, I'd drop both points out of Imp. Berserker Rage; it's just clunky and typically hard to use when actually in combat with something, and in most cases you'd be better off with something like AM if you absolutely must have the Rage boost.

On the topic or rage generation talents, it suprises me that imporved bloodrage is never mentioned as viable option. Having 40 seconds CD, i found that ability very useful when I use one HS to much, or when i want to drop in fast cleave. Improving it will make it even better for "ho-shit" situetions since it will be possible to use WW with the instant rage provided - Obviously it won't give alot of constent rage but it will be there when you need it. Anger managment might give you more rage overall but it seems to me that improved bloodrage should be better dps increase if it makes it possible to avoid wasting WW CD time.

He's talking about improved bloodrage though. This works off the global cooldown. (contrary to improved berserker rage).

As far as I know, shattering throw is on the same boat as ArP rating and battle stance bonus.

EDIT: seems I was wrong. I got confused by the low amount of dps I gain when shattering throw is active - guss I will have to go and learn how this thing actualy works insted of just counting on the spreadsheet.

I'm pretty sure you are wrong. Easy way to memorize:
sunder, ff and shattering throw are debuffs on the mob
ArP, Set Bonus and Stance bonus are personal buffs

These two categories do not share "the same boat". So to speak.

Because ArP does not affect all of the mobs armor (=AC) in every case but at most min(AC; (AC+15232)/3).
This means: if the armor of a given mob is < 7616, all of his armor can be ignored up to 0.
If his armor is > 7616, he will have residual armor left no matter how high your (personal) ArP is.

E.g. consider a boss with (IIRC) 10643 AC. fully debuffed he has 10643*0,8*0,95=8089 AC left. A warrior with hardcapped ArP would ignore 7616 of these, leaving only 8089-7774=315 AC of mobs armor to mitigate the warriors damage.
This is why shattering throw is a damage increasing effect even when a boss is sundered, ff'ed and you have 100% ArP.
With shattering throw active, a boss has 10643*0,8*0,95*0,8= 6471 AC lecft, which is less than 7616.

All of this was explained in detail when the blue posts about ArP mechanics were made. And I'm pretty sure in two months the same will be explained again.

Orenge gem slots, mainly.