Base damage matters because during weapon skills the scythe does physical damage, not magical.
-What about mobs that are resistant to magical damage? There are very many bosses and VIP mobs that can mitigate magical damage just as mobs with high defense or -pdt can mitigate the damage from a non twilight scythe.
-The scythe has higher base damage, and bolsters endark giving you MORE ATTTACK, which is why you USE ENDARK. Not to mention having the side effect of bolstering the minimal utility we have in making all our dark magic more accurate drains/stuns.'
-You are giving up a+70~ attack with woeborn on as a self buff, for a very very very low and random % proc, even on trash mobs, in a PVE SITUATION.
Which helps boost WS damage greatly, and helps cap your melee damage on monsters where otherwise it would be the fevered dream of a madman.
Are you sure this isn't a Ballista discussion because thats the only way I could see somebody championing Twilight scythe over a weapon with higher base damage that buffs endark.
The death effect doesn't proc on anything worth a shit, only on weak mobs its a gimmick weapon, plain and simple.
I bet you're one of those DRK's with Twilight scythe and some perle pieces, who just want to believe that Twilight is the end all. You're a damn fool.