Rng fucks you sometimes. It sucks. I don't buy that a couple logs are enough to condemn any spell/skill/edge/legacy. These logs show me a huge matchup problem. The dagger spec is clearly outmatched by the sword spec. Sometimes there are certain characters that are gonna make yours look like shit because the matchup is just terrible.
I recently went through this with trekberg. He's a really strong character, but my conjurer was his worst matchup so things didn't end up well for him. That's how it is sometimes. However, it doesn't mean anything is broken.
If the dagger spec maybe changes a few tactics (possibly changing to his other weapon spec because dagger clearly isn't working) then maybe he can pull out a win. Or maybe he is going to have to fight behind the destructor a few fights so he can get a kill and strip some of hose shinies. Either way, I still contend that you shouldn't feel like you're entitled to a victory in every fight. Sometimes you're just plain and simple outmatched, and that's ok because there are ways of still killing your foe. You just have to think outside the box, and find a way to even things up a bit...