Title says it all. I am a little confused since I thought that strength = health, dexterity = dodge and crit, and intelligence = damage, bonus damage, and intelligence for mages yet my characters damage is a little low compared to others that have more dexterity. Also when I view stats on items with more dexterity it says that it gives more damage. Any help or advice would be much appreciated.

Mage lvl 30
With equipment and passive skills.
strength - 107
dexterity - 6
intelligence - 356
health - 2268
dodge - 1.30%
critical - 10.99
bonus damage - 278%
mana - 3710
damage 215
Dps - 387.1
armor - 807

edit: Wanted to say sorry if this is the wrong thread. This is my first post and wasn't sure where to post to.