Modern Warfare 2 Didn't Take Anything From World At War

Infinity Ward’s Robert Bowling has said Call of Duty: Modern Warfare 2 hasn't taken anything from Treyarch's Call of Duty: World at War following the developers admission they'd learned from Modern Warfare's multiplayer:

“We’re not taking any pages out of World at War’s book. We’re crafting a special and unique experience for Modern Warfare 2 players that I don’t want to spoil too much."

“Definitive numbers like max level cap, complete weapon lists, and number of new perks is something I don’t want to ruin and save for when the player ranks up and sees they’re constantly receiving new rewards for it, whether that’s a new weapon, perk, kill streak unlock, or item for their call sign.”

Source: GamerZines