Actually i have a slightly different opinion.
You see, COD games, no matter how hard Devs try, ALWAYS get cracked. They take their sweet time too, but the end result is mostly MUCH better as compared to what devs offer us. (Some fine examples can be given for AlterIWs MW2 mod; Tekno, AlterIW, 4D1's MW3 mod, ProjectOps for Blackops).
However its not the case with Origin online games. So your best bet for spending the money is, to the game which has the least chances of getting cracked. That would be MOH.