Comfort mode is superior to Temperature mode because our comfort is not determined by just temperature, but also by many other factors, such as humidity, sunlight, outdoor weather and our metabolic cycle. The A.I. considers all of these when choosing settings so that the environment feels more stable to the user despite the changes in the room. 

For example, 25 degrees feels very different if it was dry or humid. Similarly, if the outdoor weather was hot or cold, it would also impact how the user will feel in the room.

If your preferred temperature is not constant, you'll have to adjust the target frequently, but in Comfort mode, it'll automatically consider how your needs change over time and a simple feedback would also be able to update the prediction if you find it too warm/cold.