Destiny "Focused Fire" weapon mod, does it balance out?

The weapon upgrade mod "Focused Fire", what's the exact mechanics for this?

The description reads:

Focused Fire
When zoomed, this weapon fires slower, but deals additional damage.

With this icon:

Does the reduced rate of fire and the increased damage balance out?

Meaning, will aiming down the sights do the same DPS as when not aiming, provided you hit every shot the same place?

I know there are things like more control over recoil with reduced rate of fire, but other than that?

As an example of numbers that would balance out:

• Not aiming: 100 damage per bullet, 10 rounds per second, total 1000 dps
• Focused Fire: 50% firing rate, 2x damage per bullet
• Aiming: 200 damage per bullet, 5 rounds per second, total 1000 dps

Is the exact firing rate reduction and damage increase known?