building muscle is key, as I am sure you know. I'm not certain of the specifics but in a controlled study of some sort that I suppose you could find if you were looking for it, they had groups of people doing cardio, mixed cardio and weights, and strictly weights. They all had the same diet and were a good mix of sizes (all overweight to a certain degree)

The group that lost the most weight was the group that did only weights. This surprised me as well but it wasn't just doing a set and then spending an hour watching youtube, then doing another set. It was regimented circuit training with a plan and short breaks.