Why is it that in World at War, getting the 7-kill attack dogs kill streak was a rare occurrence (maybe 2 times total a round if lucky); but in Black Ops people get the 7-kill attack helicopter and other kill-streaks higher than 7 much more frequently as compared to World at War?
Camping? --If so, why do more people camp in Black Ops as compared to other WWII set COD games?
Maps? --Were the more open in WaW?