Seeing his whinefest on the UC forum, probably. Why do you want an already really sluggish game even slower?
Actually when you increase your endurance you move as fast as you use to in uncharted 2.
Automatic ammo pickup takes me out of the experience I had in uncharted 2. I now don't have to worry about my ammo count which provides a bigger challenge when you worry about low ammo, I could accidentally drop my weapon and my team mate who has the same weapon walks over it and collects less than 10 bullets, I no longer have the choice between wanting less than 10 bullets or over 100 bullets since I can't leave a weapon on the ground and come back to it later.
They are just dumbing down the multiplayer for a more casual audience. Hell even in single player there is automatic ammo pickup.
Because of the ammo pickup? -_-
That and the horrible online connection and I crashed three times in one day.