Actually, Arms does quite well in low-target situations. Twin Valks, for example. It doesn't have WW, true, but Sweeping Strikes along with stronger Cleaves (relative to Fury) is a good combo, and Bladestorm helps tie it together.
There is obviously a gap, but I'm not convinced that it's quite so wide as is suggested. Though, a little more parity between the two would be welcome. The biggest issue isn't even WW (that particular issue is... more of an issue on 3-4 adds), it's that Fury can absolutely spam Cleave in most situations, whereas Arms does not have the rage regen from an offhand to be quite so liberal in its use of "On Next Swing" attacks.
I personally don't have any success with Arms. I guess it's just because it has been so long since I have played Arms, but, it seems like Fury is just miles ahead of it, for me personally. Tried Jarraxxus hard mode as Arms, came out at like 5.9k..did next week as fury and was 7k. It just doesn't seem like an option for me.
I'm really trying to up my Fury DPS though. I know I can do more. I just need to know when to start gemming ArP. What %? Looked through multiple pages in this thread, searched for it, just can't really find a solid answer. I want to be sure because, well that's expensive as shit. A lot of cardinals. At my gear level I would think I would be ready to gem it but, I just don't know for sure.
I'm also having trouble deciding what OH to use as Fury. My 3 weapons are Dual Bladed Butcher, Earthshaper, and Stormrune Edge. Now, Butcher is obviously my main hand, and currently I am using ES as OH. But I've been thinking..
With the extra crit gained from the agi on Stormrune, and the high amount of ArP, would that make it a better OH?
-Less Top end Damage
-AP, not STR
-Less net AP
-Less Hit, drops me below cap
+More Agi (increased by kings, more crit)
Can't decide honestly. Is losing 50 top end worth the increased crit *about 2%* and ArP? *5.00%*