I'm not sure about how the system works, i mean, does the perks and values counts the same with a sword and a dagger?? Might be a stupid question, but i want to be sure... I'm building and argonian so i wanna know if i should spend perks on One Handed or should just leave it there! Thanks!

Daggers are placed under the one handed skill tree.

Stacking those with the Backstab perk (along with other enchantments/potions), while sneaking, I've been able to one hit kill dragons on Expert.

I've been told that some of the 1H constellation perks don't affect daggers, but I know the first one does.