MicroCool is right. They delivered everything they promised.
Some people just can't be pleased. Everyone says "We want DLC..." so they put out challenges maps. Everyone says "We hate challenge maps, give us story DLC..." so they put out story DLC. Everyone says "It's too short/no twist ending/no spoilers for the next game!"
Pfbbbt!!! Go pay $20 for COD maps or $40+ for Gears 3 weapon skins.