I got it for the Wii and it is pretty fun, so far I've only discovered 1 flaw with the game, and that is on the level Nuketown I spawned on top of a table where I couldn't move from.
The setup I have right now for my main class is:
Primary : Famas - Red Dot Sight, Extended Mag
Secondary: Python - Speed Reloader (or) Ballistic Knife
Lethal: Frag
Tactical: Nova Gas
Equipment: Claymore, Tactical Insertion, or Motion Sensor.
Perk 1: Hardline
Perk 2: Warlord Pro
Perk 3: Marathon (or) Hacker
If anyone else has this game for Wii, which I doubt, you should friend me.
P.S. This game has Zombie mode unlike WaW