It's not longer, it's shorter. And while MW1 was indeed ****ing amazing, MW2's campaign doesn't really have the same 'wow' moments. In fact, it's told mostly told through disjointed cutscenes.
I am extraordinarily annoyed at the Halo 2-esque multiplayer right now. People running around with akimbo shotguns and dual Uzis are bad. The camping is worse.
It is too longer, by about six missions, IIRC. Total gameplay wise maybe an hour.
As for the multi, people had better get tired of using akimbo shotguns and dual uzis by the time I get it, or I will have to quickly show them how bad an idea that is.
It's shorter; I blew through it in four on Hardened. The missions are either perfunctory or padded, and they never feel as satisfying as MW1's.
And as for the akimbo shotguns and uzis: that's the problem, my friend. It's not a bad idea.
The maps have so many corners they're practically maze-like.
I was a good player in MW1 (about a 2.0 kdr, a bit under, primarily used an AK-74 class so it wasn't all hiding with a rifle) but MW2 is just exponentially more frustrating. Part of it is the subtle but pervasive lag, part of it is the new killstreaks (need moar Stingers), part of it is the god-awful map design.
So is it still "Call of Grenade: Grenade Warfare" in multiplayer? That was what finally turned me off to CoD4.
Nope, actually, frags got nerfed pretty hard, and I don't think the '3x Frag' perk exists any more, though I'm not completely sure.