Grenade damage?

[GamerChas]

Most places I see list the damage from a fire bomb, freeze bomb etc as 80. But on the wiki page:

http://dragonage.wikia.com/wiki/Poison-Making

 

It has a table that says the damage from grenades is linked to a tier. A tier 1 bomb only does 26 damage. Tier 2 is 52 and tier 3 is 78.

 

I am totally confused by this table. Is it true that a fire bomb does not always do 80 damage? What are these tiers - maybe the poison ability of the maker of the bomb or the thrower of the bomb?

 

 

 

 

 

[Thandal]

Strength of grenades, bombs, traps, (and potions, poisons, etc.) is tied to the associated ability of the character creating the item.