When you sit back from afar an analyze a schedule, you begin to make predictions. Based on your knowledge of the opposition, understanding of your teams strengths and weaknesses, and accounting for variables such as travel, elevation, potential rest days, and location, you can begin to make assumptions as to what a teams record could be.
Granted it is not an exact science. If it was, then forecasting articles wouldn’t be written, schedule prediction podcasts wouldn’t be recorded, and games would not need to occur. If we could predict everything, then what is the point?