I've never found the AI to be superhuman, but it's the tactics they employ - there's little variation. Most of the goals come from when they run to the wing, dance around your fullback and pass it to the striker at the near post, who will then hold off the defender, turn and place it in the far striker.
Plus there's the times when they play keep-ball at the back.
The fucking possession they use around their back when
you are winning is superhuman. The wingers having magnets which repel your players, that is superhuman. I was refering to that kind of stuff.
The main problems with PES2015 gameplay wise are these two motherfucking stupid things, and the always similar playing style. Either they score goals from the wingers maness, or have a Andy Carroll upfront, high pass to him, you will not be able to take the ball from him, and pray for the keeper to save it. No matter the team.
As an example. I'm playing in TP right now, it just isn't as "superhuman" as SS. I've installed a chants pack (glorious mod btw, it adds a really, really intense atmosphere, great stuff) and tested it in a Exhibition match, Real vs Barça. They didn't had a single shot. I man-marked Messi and Neymar, and they had absolutely
zero solutions attacking wise.
And this proves yet another problem, the importance the game gives to certain teams and players. No matter how well I play, if I play with Real it will be easier. Our own players play better, the opposition plays worse. It's just like the Pressure ability in Pokemon
In summary, if this gets solved, we will have a hell of a great game, gameplay wise.
Edit: Those 3 faults resulted in 3 yellow cards. And that brings us to another fucking problem: referees. I don't think this matter needs more discussion.