Point Lookout was mentioned as a reference in terms of the size and amount of content.
And for ten bucks, Point Lookout was a good buy. Would have rated it completely differently had they charged twenty for it, though.
The silver lining of the Xbox exclusive for PC and PS3 users is that we have a much better idea what we will be getting with the DLC now, and I know enough to wait for it to go on sale. I'll eventually get it ... if for no other reason than because many of the best mods will use resources from it ... but I'm not in a hurry.