this is bro science. weight management is summed up with : eat more than you burn = gain, eat less than you burn = lose, eat the same that you burn = maintain. it doesnt matter what you eat when it comes to WEIGHT, it matters when it comes to body composition. gaining 10kg on nutella and chips will make you look much flabbier than gaining 10kg on healthy fats and protein. but when it comes to weight itself it's based on calorie amount.