「System to Player Announcement
Your success chance is calculated based on your skills, equipment, techniques shown so far, level, stats and physique.」
Draco froze, then he slapped his forehead! Of course, this was it... no wonder he lost both times. However, Draco could not be blamed for his mistake.
Putting aside the fact that this Class Up Procedure stuff was new to him, the way the system had presented the choices made it seem as if the difficulty chance was calculated by the Rank of the class, not by his specific chances.
Each Rank of classes had uniform chances of success, so anyone smart enough would have come to the same conclusion as Draco.
But it seemed like the AI factored in his bloodline, everything he had shown/learned, all his skills, his shown techniques, his subjective magic, his titles, his rebuilt body, his Control and his equipment before drawing up the numbers.