Pretty much though as a sort of anti-Markuk. Ordered peaceful creation as opposed to the violence of Marduk laying out Tiamat. I just had a quick google though and I'm having trouble finding anything to back this up.One of the Mardukian personae? almost every major god tend to be the lighthing/thunder one, the nordic is the exception and still is a major one
Edit: I've done some more reading and I don't think I know enough on this subject to hold a proper opinion. Hopefully someone else can chime in.