Halo 3, MW2, Gears of war 2, or Left for dead 2?

[Reda]

if you would number them in order by which games are better how would you order them?
my opinion:

1: Halo 3
2:MW2
3:Gears of war 2
4:Left for dead 2

 

[Alamo]

1. MW2
2. Halo 3
3. Gears of War 1
4. Left 4 Dead 2
5. Gears of War 2

 

[Yasin]

1.MW2
2.Halo 3
3.Gears of war 2
4.Left for dead 2

 

[Lynk]

I think:

1.MW2
2. Left for Dead 2
3. Some thing better than the other 2 like Dora the explorer... get my point the other ones arnt good