Wtf's with this thread o_O
1. Item weight has absolutely nothing to do with your ASPD. There's a thing called weapon delay which affects all weapons and classes differently.
Let's use a Sbaer as an example: Saber is a 1 handed sword, and for an assasin a one handed sword has a delay of 65. While on the other hand a dagger has a delay of 55.
Now let's look at Saber again, but this time on a Lord Knight. 1 Handed sword has a delay of 50 when wielded by a knight class character. And a dagger has a delay of 50 when used by a knight class.
So while Saber gives lower ASPD to a Sinx, it gives the same ASPD to a Knight as a dagger gives.
However Daggers have pretty much the lowest delay on all classes after fists.
2. SinX's can't get triple attack, it's double atatck that they use. Triple attack/raging trifecta blow is the monk skill which many rogues/Stalkers copy.