I really enjoyed CoD4 over Halo.

Halo did give me many great moments... but since my brother stopped playing and I quit playing with this certain player, I just haven't really touched the game. CoD4 is, IMO, the greater game. It has more intense fights and I do enjoy gaining higher ranks.

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"I think the human race needs to think about killing. How much evil must we do
to do good?" -Robert McNamara