I have both and have been playing them a lot over xmas.
Seems a lot of people arnt sure what to get, well its simple.
COD is a good game but it looks and feels like a ps2 game with wii controls tacked on. Now this would be fine if the controls added to the experience but i have had a lot of bother with them.
DONT use gestures for grenade throwing , it works maybe 1/3 of the time.
DONT sit closer than 2.5 meters as this game doesnt like it, redsteel deals with that distance fine but my cursor freezes and disappears with COD.
Redsteel is a wii game , it looks unique and the controls work very well after 30mins. It sounds better than COD , the guns on COD dont opack much punch sonically.
Redsteel is longer about 15hrs , where COD is 10-11 max.
I am a little disappointed in COD , the intro and 1st level are very immersive and hectic but it loses pace the closer to paris you get.
There is some nice bump mapping on the helmets in COD , shame thats the only textures they seen fit to do.