I have been a PES addict from day one and in the early days (1-5) they released a new game with brilliant subtle changes, which, initially made you think they'd messed things up until it clicked. You then realised they were improvements.
To next Gen, 6 was a very competent starter, and importantly online was near flawless.
2008 and 2009 - hmm problems had crept in, but i still got enjoyment from single player with ML as engrossing and satisfying as it ever was.
2010... OH DEAR. Konami have messed this up in so many ways it is very annoying, frustrating and sad. New features are porr compared to what went before, eg sliders taking away proper tactical control and directional run options for players.
They have changed things that worked fine and inexplicable messed them up, and even the fundamentals of the gameplay have been ruined. The oppos maintain the ball and pass at lightning speed, the pressure option is watered down and all your team drop off so you are too far from the player to have any impact before they've passed it on. Plus the AI of your own players and the opposition is ver bad. Eg. I was losing 1-0 in a match so set all out attack tactic and attack level to max... one striker i controlled was chasing a defender down making him run to his own goal, and instead of supporting me as they should, my team mates turned and ran backwards..... they only "engage" in your tactics it would appear if you have the ball....
I tried to like it as i desperately wanted a decent PES, but it's not there i'm afraid.
Therefore i have classed it as worthless as it is inferier to every version that came before it in my opinion, regardless of how good the player likenesses are.