Anyone else experience these being wrong measurements!? I pour it into a medela bottle thinking sits…

Anyone else experience these being wrong measurements!? I pour it into a medela bottle thinking sits 2 oz cause that's what my advent says but then I pour into the medela bottle an it's only 1oz! Anyone else noticing these measurements off? Cause I feed my daughter out of the bottles too... I feel bad thinking I gave her2oz instead of 4