Reasons why not to buy.
1) Standard graphics for games of the times.
2) First 3 hours is just boring, no real action. Let me just run around gathering... boring..
3) Really disappointed there are no guns but a lame shotgun. (Like let me build some ammo in a gun shop or something).
4) You will notice the RPG characters are the same, just different ages. (For example, you will see a guy standing inside the safe zone of a city, that same guy will be a PK outside the city (but just looks older), or that same guy will be a night runner just younger.) There's billions of people in the world and the game has the same 50....
3) You hardly get to drive any vehicles either. Who wants to ride a Bicycle across the maps?
Overally: Pretty much just stick to DL1. At least you get a dun buggy, guns and there is more characters.