alright i understand why people go sub for pvp maily 2v2. but why go maces or swords instead of daggers, i mean daggers seams like the obvious choice. The target will be stunned for a lot of the fight so you can spam back stab and of course say you've already poped vanish twice you can still SS and back stab if the fight is lasting long enough. so someone explain why everyone goes sub but not daggers

because they like the punch of a fist or sword,and also enjoy using hemorrage which is increased by shadowstep,it equalls big dmg,
yet i hate everything cept daggers,i macro my main hand tho
from dagger too sword and do not have hemo or ghostly strike,this wails as i put my other talents in assa.
I run a 20/0/41 as lethality generates more dmg,from a sword  using SS ,i gouge, which i have macroed to change to dagger
then backstab.
I then Vanish and ambush again,onto a macroed sword main,its great fun and dmg just peels off by the thousands,you just gotta get used to the cast time switching between weapons