User blog comment:Helix Armada/Which Killstreak system was better, the one in COD4/WAW (3 set killstreaks) or MW2 (customizable killstreaks)?/@comment-213855-20100917041202

MW2/BO system is better, because CoD4/5 killstreaks are not rewarding, and I can't call them in due to "Airstrike not available", "Artillery not available", "Helicopter not available" and "Dogs not available" messages.