Aura: Guidance

Hello.
For almost a year I thought the aura guidance was only for warriors, raising it's probability of hitting the target.
Yesterday I partied with a mage who said "put guidance on me", so I asked "why if you're a mage?". After the "I know more than you about l2" scene, he told me accuracy is not only the % of hitting physically a target, it is also the % of magical hitting.
Anyone knows if it's true?

Magic is based on a completely different success rate, and guidance has no impact on it.

By the way, these spells usually are referred to as "buffs" here, so using that word might make it a bit easier for people to understand. :D

Did they want focus too? :p

Thank you a lot.
I prefer the word aura because from "buff" (that is much cacophonic) it becomes "baf" in the "mouth" of teon's people, and there is nothing more awfull than a guy you haven't seen in your life telling "baf plz" or just "baf".
I mean, when I am at the street and I ask someone for a smoke I dont tell him "cigr", I tell him "Can I have a smoke, please?"
That's my point, but anyways, it doesn't matter; my question was well answered and I thank you.

After the "I know more than you about l2" scene, he told me accuracy is not only the % of hitting physically a target, it is also the % of magical hitting.

Spells never "miss" as in "the nuke flies past your head", they always hit the target. All they can do is either "fail" (e.g. when the target is of too high level) or be "resisted".