User blog comment:CoD addict/Call of Duty: Black Ops at Gamescom 2010/@comment-747471-20100820113505

Vehicles in WaW was kinda nice. The maps weren't really that enclosed and had more space that in MW2. That's why most of the killstreaks in MW2 were so overpowered, the maps aren't designed for it. Look at the Battlefield series. Big maps, that way they can use a lot of vehicles. And grenade launcher deaths are far less common.