We cannot exercise our way out of a bad diet, in spite what modality of exercise we choose to perform.
Picture obesity as a bathtub that is overflowing and the water representing fat. Imagine proper nutrition as turning off the tap and corrective exercise as pulling out the plug.
If the tub is already overflowing, pulling the plug out without turning off the tap is not going to make much of a difference – we are still overflowing.
If however we apply both simultaneously, the amplified effect of the two together is so great, it is almost inconceivable.