Guild Wars 2

Okay, I just made some tests with different lvl 80 berserker daggers, since I didn’t think of CnD.
Upgrading from an exotic dagger to an ascended one boosted CnD by 65 basedamage.

So I was wrong. An ascended dagger in your offhand apparently has more effect than I thought.
Sorry about that :/

As a full-zerk D/D thief I can tell you, upgrading your offhand-dagger to an ascended one isn’t worth the time or money you’d have to spend on it at all.
While the first ascended dagger boosted my backstab by around 100+ basedamage when attacking from behind, the second one boosted around 4 basedamage.
So if you only want that second ascended dagger to improve your damage, you might consider, if you’re willing to put in all the effort for literally almost no damage improvement.

Too bad, this problem occurs in PvE when your enemy doesn’t even move. This is not about evading, the skill just bugged.