Concealment in Fog

[Tharg The Pirate King]

Ok I have been designing a Sorcerer with the Stormborn Bloodline. My concept was based on the bloodline power:

Stormchild (Ex): At 3rd level, you gain resist electricity 5 and resist sonic 5, and treat wind effects as being one step less severe. At 9th level, you treat wind effects as being two steps less severe and gain blindsense 60 feet against concealment from natural or magical fog, mist, or weather effects.

Then I noticed after I did all my work that it says Blindsense which states:

Blindsense

... Any opponent that cannot be seen has total concealment (50% miss chance) against a creature with blindsense, and the blindsensing creature still has the normal miss chance when attacking foes that have concealment.

and in natural fog:

Fog

Whether in the form of a low-lying cloud or a mist rising from the ground, fog obscures all sight beyond 5 feet, including darkvision. Creatures 5 feet away have concealment (attacks by or against them have a 20% miss chance).

So basically if I am reading this right. At 9th level with my bloodline power I cast fod I am now in a fog I have 20% concealment and with blindsense those penalties are still there? Why have the ability and why does it say you have it against concealment? Did they mean Blindsight which would negate the concealment penalties? And since it is suppose to be only usable against the concealment of the fog it would make more sense.

Can I get a ruling on this??

[BigNorseWolf]

The advantage is that you know what square they're standing in, you're able to pinpoint their location. While that won't let you cast charm person on them, it WILL let you know where to cast the lightningbolt, meanwhile they have, at best, the vauge concept of you being "somewhere over there"

[Starglim]

"fog obscures all sight beyond 5 feet"

Normally, you would have no idea of the location of a creature 10 feet away in a fog. With blindsense, you know it's there and what square it is in (and its Stealth doesn't help either). You still have 50% miss chance on attacks against it, but that's better than 100% miss chance for guessing the wrong square. edit: Meanwhile, the creature doesn't know where you are.

[Tharg The Pirate King]

Yes I see that I can pinpoint the target, but The description of the ability stated that you have Blindsense vs concealmeant. But blinsense does not effect concealmeant, only blindsight.

I thought from reading it that blindsight vs concealmeant made more sense than blinsense vs concealment.