Yes, these drop from pandy warden, got em first kill so dunno drop %.
Destroyers r fractionally faster n give a nice crit boost, true.
The 10acc from these, added to pizza/+1 wud allow u to drop basically all other acc gear you are using for +att and +str gear (or haste if were not using as much as possible before). The added damage from the att boost alone would outweigh the bonus from 6% extra crit rate.
The 1% DA rate boost i havent seen much use from, so im honestly viewing that as more of a 'trinket add on', is nice tho.
More dmg, +str and subtle blow, all small boosts over destroyers, but they add up, increasing your DoT and decreasing the mobs TP gain. Kinda obvious, but meh.
Final point, these look amazing. These look better thn any H2H wep IMO, tho relic is a close thing XD.
(sorry to those who understood this alrdy, theres STILL misconception about em)