Quote from TheRabidDeer
So why does everybody say that DW sucks for any build using rend if you need something that high?Quote from GingerAnger
You'll have to simulate a skorn on D3UP before you buy to be sure.
To give you an idea I simulated one I have with 1380 dps, 400 str and 180 crit dmg which comes out at a 5k dps loss.
The 'Damage' tab shows DPS (Damage per Second) for auto attacks (take off your main skill and you get auto attack). For Rend you want to maximize damage per Rend so white enemies die in a single Rend, thus the only important aspect for Rend is damage per hit. Higher attack speed doesn't actually provide your Rend with more DPS since the DoT of Rend doesn't stack up - so character screen DPS is misleading here.
DPS = Damage per Hit * Attacks per Second
Skorn is at 1.0 base attacks per second while your current setup (including DW bonus) comes out to be around 1.7 base attacks per second. So if you get a Skorn that results in similar character screen DPS, your Rend will actually do roughly 1.7 times as much damage as with your DW setup (assuming it's one without attack speed, an attack speed one will do roughly 1.55 times as much damage as with your DW setup).
Since your current weapon setup has no life steal, you should also compare to a Skorn without life steal - those are way cheaper than ones with life steal.
You should also try to get a crit/crit damage ring instead of your hellfire ring, without one I doubt you'll be able to reliably kill MP10 trash with one Rend.