why don't i level up in cod waw co-op campaign sometimes?

when i play co-op campaign in world at war, most of the time I'm in the lead and i win
but i don't get any exp points after the game
why's that?

Jeff2010-08-03T13:18:35Z

Favorite Answer

Because it doessn't count like it does online, otherwise everyone would be a tenth prestige. It be too easy.