Suppressive fire needs exp gain

Suppressive fire is for keeping the enemy pinned down, i.e if they move from their position they will get shot and they know it. Its a very common tactic that has been around since the stone age. It has nothing to do with BF3 which merely has a mechanic in the game to simulate the effect. Even mentioning it in the context of tactical suppressive fire in PS2 shows a total misunderstanding of the concept.