You know what's a good economic RTS? Anno 1404. You know how long a match usually lasts? 24 hours. That's twenty-four real-time hours. You can cut that down to five or six if you zergling rush.
I honestly don't know why they'd think this kind of Call of Duty deathmatch approach would appeal to economic sim fans, or what's more likely, why economic sims would appeal to Call of Duty fans. I mean, good luck to them and everything, they seem like nice people, but GOD this is bullcrap.