Based on my play, the WoW mage can be summed up, in EQ terms, as a Wizard with minor Magician and Enchanter abilities. In other words, they are first and foremost casters of massive damage spells and teleportation spells like a wizard. They have the ability to summon food, for hp regen, and drink, for mana regen, similar to an EQ Magician. They also have the ability to cast INT buffs and mesmerize mobs, by the polymorph spell, for crowd control like an Enchanter. You asked in EQ terms so that is how I put it, but I would strongly recommend that you not think of this game in EQ terms as it is night and day different than EQ.
If you enjoy playing casters, I think you will like this class. I know I did.