What you have here is that a good portion of people who purchase these new cars are comparing the DCT to a hydraulic automatic transmission. It has some quirks that separate all DCTs from ATs, and that includes a low speed shudder when accelerating from a stop due to a low rpm engagement of the gears. It will even shift into 2nd if you're rolling before you hit the accelerator exacerbating the problem- that one is what the software reflash can fix.
Now, because there is a large group of people who are complaining about their cars, then Ford has issued dealers a diagnosis recommendation to help separate the people with real problems from the ones who don't understand the differences between a DCT and a standard AT. What you have in this thread are 2 people who feel like they've been wronged, assume everyone else will be wronged as well, and fully believe that the rest of us are just blind to the misgivings of our car god Ford. Now Ford's transmission diagnostic can cause issues for some people who have real problems thanks to the complainers who don't have problems, but if Ford didn't do that then the dealer service centers would be full of cars with no problems. VW had the same issues with their DCT, so this is nothing new. When it's an expensive European car (from Brazil), people look at the problems differently than when it's an average priced American car. Not to mention that I'm sure the Focus DCT has outsold VWs already putting more vehicles on the road.
My best advice is to do your own diagnosis to see if your transmission is experiencing problems that are out of the ordinary. First, make sure that you don't spend time hovering over pedals. Be either on the brake or on the gas at a stop. Most people tend to let their foot off the brake and coast forward at stop lights- like you would in a standard AT. Try just waiting with your foot on the brake and then going. If you've ever driven a manual transmission, then you probably remember what will happen when you shift into any gear and the rpms drop too low. My dad used to drive his Honda up the driveway at 5 mph in 2nd creating such a groan that you could hear it inside the house. I even suggested to one girl on here that she drive her 2012 like a teenager for a week. Go ahead, give it some gas- if you're afraid you'll break something, then you definitely want it to break under warranty- right?
Note any strange sounds you hear like humming at highway speeds that can be changed by forcing the transmission into lower gears to separate that sound from tire noise. Make sure that whatever you hear is something that you can reproduce 100% of the time so you can show a service advisor. Mechanics can't fix what can't be determined. Something that happens every once in a while is impossible to diagnose even if you're the driver. I had a bad inner CV that I noticed at about 1K miles, but I wasn't able to get it changed under warranty because of the nature of the problem. I finally changed it out at 120k miles- not out of the ordinary for CVs, but it was "bad" during that whole time.
I don't want to detract from your problems, but I do want you to understand things from the other side so that can help you get your problem solved with the dealer, Ford, and the service manager. Oh, for some more peace of mind, call your dealer and ask them what Ford's tow service number is. It should be in the owner's manual, but the receptionist will know also. There is a 800 number, something like 800 tow ford, you can call that will get you a tow truck, and if the repair is under warranty- the tow will be covered.