I have been eating Subway a lot more recently, I find it a good way to get some greens into lunch and it is close and fast.
I had a chicken breast sub the other day that was perfectly filling. Today I had a tuna sub that stuffed me to the point of discomfort. I have chalked it up to the recurring theme of objective and not relative standards of measure.
The chicken breasts come to the store in one size. One breast per 6 inches. Not much variance there from employee to employee. However, the scoop of tuna can be completely manipulated by the employee. While the scoopers are standard, a mounding scoop can be much larger than a flattened scoop. I am pretty sure I got four MOUNDING scoops today.