Since I don't belive in the "45%" occ att twice BS, I'll just assume that that the weapon+brutal gives 55% chance of DA on the first punch and 5% on second punch. If you check the math done
here and adapt to the 440 delay/double attack you find :
New weapon (D+17 delay +140 occ att x2)
Assumption : full usukane, /nin brutal.
pdif : merit-like pdif => 1.3 non crit, 2.3 crit, 1.6 asuran fists
mods : 110 str 75 vit for asuran
crit : 10%
asuran fists : gorget
fstr : cap (10)
95% accuracy for melee and asuran.
average rounds till 100 tp : 4.9898
asuran fists damage is therefore 8.1*(35+17+10+0.83*0.10*(110+75))*1.6*0.95
melee damage per round is therefore 0.95*(2.6*(35+17+10)*pdif1+0.15*(35+8 )*pdif1) where pdif1 is the pdif average given by crit and non crits :
pdif1=1.3*0.9+0.1*2.3
(the 2.6 in the formula commes from 2 punch, 5% DA/fists, 50% occ att twice)
The damage per second of this weapon is threrfore
(0.95*(2.6*(35+17+10)*pdif1+0.15*(35+8 )*pdif1)*4.989877194+8.1*(35+17+10+0.83*0.10*(110+ 75))*1.6*0.95)/(440*4.989877194)*60=
56.43 dmg/s
Destroyers
average round till 100 tp : 7.364
Adapt the above formulae with 16% crit on non kicks
pdif1=1.3*0.84+0.16*2.3
pdif0:=1.3*0.9+2.3*0.10
(0.95*(2.1*(35+21+10)*pdif1+0.15*(35+8 )*pdif0)*7.364+8.1*(35+21+10+0.83*0.10*(110+75))*1 .6*0.95)/(348*7.364)*60=
55.73 dmg/s
conclusion : none at this point, the difference is relying a lot on the actual proc rate of the "occ att twice". With the above 50% assumption you get a weapon 1.3% better than destroyers ("only"). If you do the math with a 45% assumption it's now 56.0 dps vs 55.7... So at this point I'd rather spend my play time farming virtue stones than camping retarded NMs for a weapon that in the end is worse than hades for tanking and faith for pure DD.