Comparison Demo's to Full game:
Only gameplay/AI
based on 10min games on Professional
+++Positives
Shooting (weight/physics/chip shots/feints)
Passing/Early cross (feel, i can make every pass i want and it makes sense)
Committing/Hold up play (

+

system)
Slide Tackles are faster and better overall
Through ball/Lofted are fairly balanced
Ball control, is just fine (indivuality/skills/feel are spot on)
Player awareness is very good, hardly had complaints about players not doing what i wanted them to do or not knowing what was going on depending on where the ball/players are etc.
Attack-Defence ratio overall feels very VERY balanced
Active AI superb, in defence and on offence (my team)
Cpu AI, feels more like demo 1 which is good (in attack)
Positioning AI in general is very good for both human/cpu (in defence)
Penalties, i don't care so much about those. They're ok
Freekicks are like Pes5 as in SUPER easy, but i like it
Off the ball control, while not mastered to say the least is nice, and seems fair thusfar (too noob with this can't really comment)
---Negatives
Blind passes and 'impossible' passes / accuracy a bit too high for both human and cpu (if i play on pass settings 2 it's equal to CPU standards)
Crossing in the box feels too assisted (too accurate)
Air duels is a bit too random for my taste (Forlan 'and others like him' beating defenders consistently in the air is just mehh) Supercancel doesn't work or barely has any use in these cases
+-Random Not quite sure yet
Ref's are dumbed down (not as strict like demo) Barely calls for anything that happens in the box (WAS perfect in demo)
Goalies, while i find them very good they still have that awkwardness about them (you have to play/see it to know what i'm talking about) Lack of awareness/response at times (?)
Top teams could do some more 'patient' possession/build up play.
Supercancel is more of a negative than a positive in most cases whereas it always used to be a positive (not too sure about this yet)
-OVERALL feeling-
Very good and fun game, has a lot of depth to it.. and i'm still getting familiar with it each and every time i play it. My main gripes are with the more apparent cpu cheating (more obvious than in demo imo) but that doesn't ruin the game for me by the slightest just want to point out my 'beef' with these issues.
With every game i play, i'm also trying to understand why some things happen the way they do, and i usually conclude that it has to do with not only the game's philosophy but also gameplay balance.
End