Do not confuse grams and calories. Consuming more food does not necessarily mean you consumed more calories.
Grams are a unit of mass.
Calories (kilo-calories) are a unit of energy.
A gram of fat, carbohydrate, and protein are all the same size = 1 gram
But, they do not all contain the same amount of calories. Fat= 9 calories, Carbs= 4 calories, Protein= 4 calories, *Alcohol= 7 calories
So if 2 people both ate 2,000 calories one person could potentially eat more food in regards to a food’s mass.