Two different sets of algorithyms. The AI is coded to be competitive, while yours is coded to be more realistic. As an example of differences. How does an 84 rated AI team, play more agressively at superstar, than at rookie. Still the same 84 rated team. The AI is setup for alterations. Your team is only enhanced by the players rankings on your team. The AIs team is more precise, like in passing, hitting, poke checking. While your team depends on your skill set to offset. And because of these alterations. Coding for the AI team and yours, are different. It doesnt seem fair, but its all in the algorithyms, and code that has been pre-established. Why we see so many complaints in this forum, regarding indifferences.