I don't know that the computer games (they're not simulators) really compare. I haven't much to do with them. My son has been having a ball with one of the PC based flight computer games, and today I had a go with it. I've got a fair amount of experience in similiar aircraft to what was on the game, but I managed to crash the airplane on the game three times in a row and gave back to my son. He thoroughly enjoyed watching me crash and laughed his head off.
You may find the same thing applies going the other way. Flying the "simulator" games doesn't particularly prepare you for the real thing, either. The difference is that one can reset the game any time one likes. After crashing in the airplane, this is definitely not the case.