To be fair, PES may have had the gameplay sorted (until the latest edition), but each & every one of them was also plagued by major flaws.
PES6 was unbelievably prone to cut-backs. PES5 gave you the ability to score every freekick by laying it off. PES4 (I think it was) had the COM constantly passing the ball to the edge of the area, with no positional awareness.
The new collision system sounds utterly brilliant, and it will play a major part on the gameplay, as it will come into play everytime 2 players go near eachother. If EA balls it up then the gameplay will be awful, but if they get it right we could have the best football simulation going.
The tactical differences of teams was a bit excessive in Euro, with teams like Andorra shutting out England for a 0-0 draw every time (many would argue this was quite realistic though
). It could work wonders in 09, and being able to customise them is great!