PES is scripted no matter what. It is based upon advantage play, it's really what you do when your team have the 'advantage'. The level and duration of advantage play (or lack of) depends heavily on the game mode and/or difficulty. Play offline on easy and it will be practically unnoticeable but then try MyClub/online, to make it even worse try with your team spirit low, and you'll notice it ..hard. You'll be like "wtf". Just watch how every bit of play is shut down via a combination of your passes not working, tackles not working, players not making supporting runs … it's just sad.
The game of split personality, but once you see the scripting at it's heaviest you'll then know what to look out for and then you'll see that in medium difficulty settings and modes that its more 'patchy', where you get the advantage in patches - there are also patterns to it as well which you will notice. Like very often when you score in a player vs player game the opposition team will suddenly play very well (having the advantage) until they equalize. Or the game will shut down both players by making both team kinda poor until the dying minutes of the game whereby it will grant maximum advantage to the losing player so he/she can equalize, thus artificially/falsely creating a dramatic and climactic outcome that will probably have both players want to play again to settle the old 'who is best' argument. It's horrible because in the end the game's scripting largely controls the outcomes of the game, in other words the mistakes you make are largely not your own.
