Look at this site:
[REMOVED BY MODERATOR]
How is this even possible with alleged dedicated servers? C'mon Treyarch... do something with this lag compensation!!! This kills the game,and as you can see gives hackers full advantage of it! There is nothing good in the lag compensation! Take it out from the game,now!
Let's not spread this kind of site around. I've removed your link.
Also, there are multiple posts about this topic, please do a search and contribute your comments to those existing threads.