Call Of Duty series is way better then Halo series.
Im not into that fake stuff...
What fake stuff? Call of Duty series is a game, a very unrealistic game. If the game was realistic, it wouldn't be fun, much like the American Army games.
Halo on the other hand is not trying to be realistic. It's a sci-fi shooter with future weaponry, gadgets, armor, etc...
Anyway, between the two it's really no contest. Bungie has continually supported Halo 3 since it's release, not only with new map packs but even there website which integrates all the stats, pictures, etc into one convenient package.
By all means Call of Duty 4 isn't bad (COD:WAW is lame though), it just doesn't have that same support from Infinity Ward.
Another problem with the COD series is that they ping pong developers. One game can be game of the year and they throw the next iteration off to treyarch and it's just mediocre. It hurts the series credibility as well as the developers who makes it.
And why isn't this in Gamer's Lounge?