COD4>Halo 3?

Alright, here's the deal:Apparently, Halo 3 is less popular than Call of Duty 4, and for numerous reasons, including:
a.)The ability to unlock new weapons, perks, challenges, etc. Halo 3 features none of that, and therefore, when comparing it to Call of Duty 4's multiplayer, gives you anything to stride for, as you don't unlock anything new except for a badge in Halo 3.
b.)No lunging, "real" gameplay, not futuristic like Halo 3(Although, many people love this type of game, including me), and the fact that weapons aren't "placed" on the map, and instead are unlocked by the players for a hard earned promotion.