Is Shield bash supposed to be like this

[Renytenz]

so anyway I was playing the other day on my paladin class an I was checking the skills an the traits sections in my menu when I noticed a fuck up at least I think so shield bash stuns an enemy for 6sec in the skills section an then in the traits section u get a ability that increases the duration of the stun up to 6sec not an additional 6sec but puts it right at 6secs when the skill already did that to begin with what is the point of this as I see it now its a waste of a trait slot

When you get a trait that upgrades your skill, skill description changes to reflect that trait. Without the trait, in the description time of stun would be lower.