Keep COD3 or trade it for MOH: Air Borne?

I have COD3, should I trade it for a reserve on MOH: Air Borne?

I personally thought MOH Air Borne was a rip off of COD 2, to be honest.

COD 3 a bit diffrent to COD 2, though and is getting old, so I think MOH is probably a better choice at this time.

keep it for the online multi...surely you cant be a general yet?