I've lost over 55 lbs and I don't do cardio. Cardio actually burns muscle and muscle is the key factor in raising your Resting Metabolic Rate (RMR). By only doing cardio you are setting yourself up for disaster. To maintain the weight loss that you get by doing cardio you end up having to do more and more cardio because you are losing muscle lowering your RMR.
Right now I actually eat 2600 calories a day on average and am still currently losing weight. I've done this by adding muscle mass by weight training and raising my RMR. I haven't done cardio in over 4 months and in the last 4 months I've lost about 20 of the 55+ total. To tell someone that they need to "focus" on cardio and stop doing bodybuilding exercise, while it may help them lose some weight fast, it is not sustainable long term in my opinion.
Yes you are right but its not always true,everything depends on your goal.If lets say you are like proper big ,with big % of body fat ,weights workout wont help you as much as cardio at the begining.Cardio first to speed up your metabolism would be the best option and then when you progress you can add weights workout to it for the better results and do it before cardio.A stable,controlled cardio together with a diet wont burn muscles.And when you read my post carefully it says to add body weight training if you would want to build a muscle mass.In my opinion the person who thinks of losing body weight should definitely start from cardio exercises first and then combine it with a bodybuilding workouts.Im glad you train and made such a progress.Keep working out :) and i wish you even better results