<< Ok, even PONG requires skill. But as Dudd put it rather well, MOH has an immersive factor (substance) to it that makes it more than just reflex shooting. >>
Speaking for the single player portion:
Yes, i'm sure it's more immersive. You get a role, and that role has a job to do. Badabingbadaboom, you finish the game. Now you ask yourself, "Am i going to play this great game again?" So eventually you work yourself up to playing through a second time, maybe even on the next difficulty level. On completion, what do you do? Play again? No...I doubt it.
First point: Replay factor = severely lacking
Now, you've played through on the second most difficult AI level, and you've still completed the game, no? Let's try to take it one step further, take it up a notch. Now what have you completed? You've bested computer controlled bots. Woopdidoo, you've fragged a few bots. Where's the pride in that?
Second point: Skills needed = not very much
Take it for what you will, but you will eventually get sick of trying to better yourself against bots, and you'll eventually grow tired of the same monotonous (although they're immersive and contain substance right...) missions.
EDIT - heheh, forgot to add my comparison point.
You might wonder what the first and second point have to do with this whole argument. First of all, intense FPS games are like role-plahing games in themselves. You are trying to improve your character, which is basically YOU, the person sitting behind the keyboard/mouse. Skills are learned through replay. Or as most of us know, you learn through losing. You'll never get better at playing bots, which is the limitation of the "immersive" single player environment you find in MOH. It's this I-need-to-better-myself attitude that has gamers addicted to those *skill* FPS games.
/me thinks that you've had your 4ss handed to you too many times in Quake/UT...