jatarro,
Excel Charts only chart the information with labels on the x-axis. Therefore, as far as Excel is concerned, the x-axis has no "scale" it only has an equal amount of labels to the amount of data points you give it to plot. In this way Excel only
charts points you give in and does not
graph it like you are able to do in Measurement Studio. So the x-axis scale will always be equal to the amount of data points you give it, even if the labeling is different.