What would you score each Halo game in the 1 to 5 scale?

[quarashi]

I'm doing overall and not SP and MP. I should though

Halo CE 5/5
Halo 2 4.5/5 SP was garbage compared to the others.
Halo 3 5/5
Halo Wars 3.75/5 haven't finished it yet.
Halo ODST: 3.5/5 wished for some Firefight matchmaking