What Makes COD 4 > COD:World at War

1) Weapon Camos : the weapon camo give players an incentive to keep players to continue to use specific gun. 

2) Weapons- lets face it the modern weapons just work better then their world war 2 counter parts.

3) No Dogs - dogs are a little overpowered, a concentrated fire on a helicopter will take it down in no time, while dogs spread out and single out players which makes it harder to handle. 

4) No tanks- i like that Treyarch tried bring vehicles into multiplayer, but they are just over powered and can be abused by cordnated players.