Why even ask this question? CoD4 Beats it anyday, Look at all the hackers on CA compared to xbl. On PC though theres hackers. On xbl I have only seen maybe 3 hackers? And I have played for maybe 2 yrs now.
CoD4 Is just so much better if u say CA u probably havent even played CoD4 or u suck at it.
They're both good in their own way. CoD:4 has good graphics and a campaign, and is more realistic. CA is fun online cause you have more health to survive with, and you can put more then 1 attatchment on a gun at once. I perfer CoD now, but they're both fun.