It's not as simple as that, Yes your right I have not driven an F1 car, but what I do have is a book by a former f1 champion called Jackie Stewart's principles of performance driving.
In the book he goes into a lot of detail about what it takes to drive an F1 car , I wont go into specifics but all I know is when I try out these principles on a game like Gran Turismo , I can get more grip, brake in shorter distances , get faster lap times etc.
Trying to apply these same principles on F1 2010 seems to make very little difference to me, so its either they didn't put any realistic driving physics into the game, or a modern F1 car is very easy to drive .