I noticed that the achievement "Winners Cup", which has the bonus "Resistance: +1", also adds +4 to my Fire Ball damage. Is it supposed to do that?
This is on my Elementalist (Blastgirl). I just checked it on my other character, a Rampager (Basher), and here it adds +3 to Slam damage.
Edit: I just got my "Winners Cup" to level 2, and now I have +7 in Slam damage. I hope this isn't bug abuse.