what is better COD3 or 4

CoD3 was made by Treyarch and was considered a flop by the majority of gamers. CoD4, on the other hand, has been extremely successful. It's way better than CoD3, trust me. ;)

I have never been into the Call Of Duty series but I have heard a lot of good things about all the games,but I would say that I have heard more good things about Call Of Duty 4,and some of my friends have told me that it has great online multiplayer capabilities,and that they would recommend it to anyone who likes playing games online with other people.

I ahve never heard anything good about COD 3. Loads of people love COD 4. Online I prefer Battlefield: Bad Company myself.