I don't believe C&D's numbers here for a second. They're either lying, were supplied with a modified car or two, or got a bad Focus.
I just came back from a 1700-mile road trip with my 5-speed, which had under 3,000 miles on it when I left home.
The 5-speed has a shorter top gear than the DCT, and I still pulled out 37-39 mpg consistently over 5 fill-ups, with an average in the 38's. The trip was roughly 75% freeway miles, and I did my best to keep the cruise set at 73, including through southern and central Vermont where there are some -significant- mountains requiring serious throttle to climb and where you don't get all that fuel back because coasting down the other side would have you going 90 mph.
So I find it hard to swallow that the automatic Focus isn't getting at least 39 at semi-reasonable speeds on the highway.
And I'm sorry, but I don't believe for a second that that Mazda actually gets 45 MPG highway. I've also read (anecdotally I admit) that the Hyundai's aren't living up to their ratings.