The reasons:
1、Technical issue--It's very difficult to kill pirate in multiplayer server( Just multiplayer mode ,whatever single player mode) beacuse of many bug need to fix,so need a long time of this.
2、Market issue-----official encourage pirate as a catalyst to improve crysis2 to be accepted by more players...so...
3、Relationship issue----Who host multiplayer ? EA or CryteK? Who is more professional in host server?
4、Other reasons if ....
I hate cheaters!! WTF! I cannot kill at least one but almost always be killed in multiplayer servers! FxxxxxxK IT!