Ok thanks. I remember when I played Far Cry on Veteran, it took me 45 hours where on easy you could probably do it in 10-12 hours.
Damn!
I never did Far Cry on Veteran. To me it always seemed that most shooters are pointless with multiple difficulty settings, since the game itself is exactly the same no matter what.
The exception to this is the best game ever: Doom.
On each difficulty the objects were different (keys, barrels, ammo, enemies, etc.). In fact you could have a completely different game on each difficulty by changing the key placement and making players work extra hard to get them.
Also, on Nightmare the enemies respawned, which could make the game totally ridiculous after a while.
As for RPG's I find changing the difficulty doesnt often matter if you are a good player and know what to do. The one exception I can think of KOTOR 2. Changing to a higher difficulty actually improved the quality of loot in random treasure.