Well I'll have to agree with both, but look closely at what these games have in common.... Black Ops 2- Zombies, sounds alot like infected in halo. Black Ops 2- Theater i believe halo had that first as well. Halo 4- classes thats alot like COD. Halo 4- Spartan ops seems alot like COD's Special ops. I guess what i am saying is that both games are more similar than people want to admit and both series use each others ideas in order to progress their titles to par with the community's wants. In my personal opinion they both are really good games bravo Bungie and Infinty Ward... (I listed Infinity Ward because they made more COD games than 3arc)