Why is it people say that for PVE you want kesh/dam but for PVP you want Kesh/Kesh? Why wouldnt you want Dam/Dam since both weapons have the same attk speed and weight and yet the dam does more damage?
The Damas bonus is useless. It adds to your accuracy, and if you are using A duals, you prob arent missing much anyway since you shoul dbe a class made ot use them. Which dual set ot go is preference. Personally I have dual kesh, for the speed, but mine are +8 so their damage is a lil better than average. Kesh*Dama is decent becaus eit adds to your hp, so if you are thinking of tanking, or just want that extra Im not dead yet bonus go for them. Personally, I think kesh*kesh+4 would outdamage dama*dama since the attack speed difference is quite a bit. However I have never tested that so please dont take it as fact.
ebony pretty much covered it, its in the SA. Im not sure what class you are but if your a glad, in pvp you'll be using your skills more often than swinging so MAYBE the higher p.atk with the dual sama will do. Im a glad but i also use +8 keshes. I had the chance to use my friends +6 kesh*dama, the 25% health is nice in pvp to get close but to execute my atk speed faster was the deciding point.
Its the same theory as to why mages use a homu instead or a ghoul staff...the SA