Obese folks who slash calories end up losing as much fat as muscle and end up as miniaturized versions of the old fat selves. This modified bodybuilder approach melts fat while simultaneously adding muscle: the obese person eats more and as a direct result feels energized and vibrant during the process. Contrast this with the calorie-slasher who feels deprived, denied and continually on the verge of a binge. A person who eats wholesome foods every three hours is far less likely to binge and blow their diet than some poor obese person subsisting on 1200 calories a day. The calorie starved obese individual has set their caloric ceiling set so low that eating a candy bar or a bowl of ice cream causes them to add five pounds in 24-hours.
Adding functional muscle and building strength allows the obese person to become mobile and adept at climbing steps, getting out of a low chair and powering their bulk around. Compare this to the calorie-slasher who actually weakens their already weak body. Those who depend on deprivation to trigger body weight loss weaken the immune system and continually contract colds and sickness.