What exactly is your problem and you are using offensive language to anyone that saying likes pes 2011 better?
If i press the shoot button and the speed button together while my team is defending in BaL i see my defenders running, intercepting finally they don't let even star players to make it to the box or even easy shoot! In master league you can set some defensive players to follow the start attacker all over the field if you like but i avoid it because some teams are playing change position and they may find the defense wide open, i mean if you don't have wing defenders with cover is dangerous. And i like it better because i can use special training and built the defenders the way i like them unlike pes 2012 that i can't do something like this. You can find defenders with bigger aggressiveness and they run to the ball like crazy. I usually choose players with better condition 6 minimum and tenancy bigger as it docent grow so easy and i build them giving the special cards i like so were is your problem?
For realism? Set the difficulty in top player and you will see any high cross broken, slower defenders to run faster than speedy attackers and the tenacity 95 even worthless.
Ps: I forgot the "skating on ice" story!? In pes 2011 by default the game speed is set to 0 you can move it up +2 if you like it also and upload a vod how well you skating in champions league with a team that uses 5 defenders, like rangers, in top player while you just using a new BaL player with low stamina and you will get substituted in the second half for sure.
Bottom line is for every problem you can find a solution if you just explore the game a bit better.