It's generally understood that there is going to be some error in calorie measurements.  ... and, in general, those errors (+/-) will cancel and meet at roughly the average number of calories.    The entire premise of this inforgraphic is bullshit to begin with.  People aren't fat because of inaccuracies in reported caloric intake from eating fruits, veggies, lean meats, beans, etc. and further inaccuracies in the amount of calories expended through exercise.  They're fat because their chicken and broccoli is smothered in tater tots and cheese and their exercise is limited to fork pick-ups and beetus curls.