I think if you're trying to sell strength training to someone whose main goal is fat loss, you're wasting your time by focusing on the caloric expenditure of squats and deadlifts. The main benefit for fat loss is the additional muscle mass, which increases someone's resting metabolic rate, which means they burn more calories even when they're just sitting around. It's not the so much the calorie expenditure during squat and deadlifts, it's that adding muscle turns you into a more efficient calorie burning machine.