What is better COD4 or HALO3

a highly argumentative topic debated allot, although halo three seemed to have a larger following it now has less people playing than call of duty 4 this is partly due, in my personal opinion to the fact that Call of duty 4 seems to have more work put into all areas. Evidence: 1. all guns have a realistic aim-down-sights function 2. graphics are more photo-realistic 3. it's variety of guns literally quadruple that of Halo III

although call of duty 4 had its brighter spots, it lacked vehicles which Halo III had in large supply

so in my personal opinion CoD4 but you decide
My opion Halo3 but it is your choice
i would say halo3 because it has MLG people that are amazing but my own opinion is that call of duty 4 is over raided and not that fun. alot of people boost or like have no life just playing it. halo3 you need skill on that because its funner and much much easier to get your level up.