I play on PS3 and i know what you mean. I believe there is a thing that you may could call "cheating" in some ways. You have a point here and im not going to say you are totally wrong or it doesn't exist at all.
I guess i just have a different look at it then you have. If you want a good game and not a very boring one they need to give the AI some favor here an there. Otherwise you would win every game easily. You are playing against AI, not against a human player with human creativity.
And for me it is okay the way it is, because i dont feel cheated at all. In PES 5 and PES 6 i felt cheated a hole lot more than in this one, it was way more obvious. Maybe it has something to do with the way the AI scores this time. They play a lot smarter then before and i see a lot of very good and explainable goals. They score and you think "Uh Boy, that was a nice play" or "wow, what a great strike". So i would say: If they cheat it is beautiful cheating at least