I don't know anything about that particular site, nor the protestant program, but the idea that you can "pray away" a problem such as addiction, depression, anxiety, is incorrect. The solution is both spiritual and temporal. You can't "pray away" cardiovascular disease, or cancer, so why do you think you can do the same thing with mental issues?
There are plenty of non-catholics who are able to turn their lives around through these programs (i.e. alcoholic anonymous) and they provide good, practical, common sense solutions, in addition to a little bit of spiritual guidance. Catholics are lucky in that they have more spiritual weapons at their disposal, but to say that the temporal helps/programs are not needed is naive.