I'll try to keep it short. They focus on losing 1% body weight per week and not more than that as then it's not sustainable. I have been losing the same and lost about 8kgs in 3 months.
Steps + Workout + Diet is the winning combo. Diet I liked it, as they didn't tell me to eat new stuff that I never had in my diet, but rather quantified the food that I'm already eating.
Their focus is not on six packs but on lifestyle changes. So they do not entertain if you plan to lose lot of weight all of a sudden but rather it's a slow but effective approach that you learn and can carry sustainably for a lifetime.