I wouldn't say the food is "identical" since I lack sufficient data points. Whenever I've been through DEN there has been no food except for maybe a few crumbs in the bottom of the bowl. Has the situation improved?
I'm quite fond of the ORD C lounge, especially the area with the tables except for the worn out outlets. Really, how much can it cost to change the business end of an outlet." The B16 lounge down in the bottom by the bar is often quite, and it has a rare serve-yourself soda fountain.