actually cod is reaction times, if you dont shoot first, 94% of the time, you die horribly.

I disagree. Because of being able to go prone you don't always die if you get shot at first. Halo, is much more like that in my opinion.

you don't always die if you get shot at first

M40 + stopping power
barret 50 cal + stopping power
M16 + stopping power
Dragunov + stopping power
M60 + double tap

these are all pretty much 1 hit kills, except M60 where it still kills very fast.

Half the skill involved in COD is getting the drop on the other person. It takes a lot of skill to snipe. Although I'll give you the M16. That is an easy weapon to use. However I maintain COD is smore skilfull. There's just more to the gameply that there is to Halo.

When did the halo tread become a cod one?

YAY! Finally all halo toughts in one thread!

ODST didn't met my expectations. I thought the graphics
would actually be better. Also, I'm awaiting to see what
happens to the chief. Halo Wars, is in my opinion, better
than ODST, but Halo Wars is no match for Halo 3.
The only bad in halo 3 was that it had to few levels.

I have killed a 196 people by sniping on halo 3 on the internet

Oh and also:

Grav hammer
Energy sword
Shotgun
Sniper
Beam rifle
Rocket launcher
Spartan laser
Missile pod

All one hit kill weapons.

Grav hammer
Energy sword

melee weapons, can be countered by BR and sometimes they can't kill you in one hit.

Shotgun

is 1 hit within 5 feet
otherwise 2 hits at 10
4 at 15

Sniper
beam rifle

needs to be a head shot

Rocket launcher

dead on or within 5 feet

spartan laser

avoided easily

Missile pod

avoided even more easily.

melee weapons, can be countered by BR and sometimes they can't kill you in one hit.

Most of the time they do. You could just as easily say that for all the weapons on the COD list. Different weapons are suitable to different levels.

is 1 hit within 5 feet

Still a 1 hit kill weapon. If the opponent is at 10, you wouldn't bother with the 2nd shot, you'd just melee him. That leads on nicely to the Mauler.

needs to be a head shot

The same can be said of the COD sniiper rifles. The stopping power perk can be countered by juggernaut.

avoided easily

Not if you're in a vehicle. I actually find the laser to be a very effective anti personnel weapon, depending on the map.

avoided even more easily.

Again, not if you're in a vehicle.

We could argue the merits and demerits of the weapons in COD/Halo, all day and we wouldn't reach a meaningful conclusion, mainly because different weapons are suited to different situations. However, I pick COD over Halo, because the player is more actively involved in the tactical side of it. When making your custom class you have choices to make. In Halo, the best weapons are spread over the map, so it is a mixture of luck and skill as to who gets them first.

My favorite FPS is Bioshock, but that's another discussion.

Halo is good for a non-tactical romp.  COD is much more serious in the gameplay and tactics aspect of it.  For me, it depends what I'm in the mood for at the moment, though a good deal of the time I go for a single player one anyway :/