They were right about Modern Warfare being 5 hours, it took me five hours and eleven minutes to beat the campaign. Like Yahtzee said, most of that time was hiding in a corner waiting for the blood to fall out of my eyes.
TVTropes likes to talk about the separation between cutscene powers and powers in game. MW2 gives a great example. In a session, you can be shot by any gun several times and just shrug it off. When the custscene starts, you're shot by a single pistol once, and you die.
Apparently the player just isn't a good jumper in this game, you're always needing to be caught by your allies in a dramatic moment.
Remarkably, this game goes back to the idea of explosive barrels. Haven't we evolved beyond that? It adds nothing to the game.
Have you seen The Rock? Apparently the designers of the game have too.
You may know that this is a hyper-jingoistic paranoid fantasy of American patriotism. Many of the cutscenes -disguised as gameplay by letting you turn your head- can be performed one handed, if you're feeling particularly patriotic.
This is just a minor quibble, but there's no reason for the team in Russia to have a live communication feed with the team in Afghanistan. That is, there's no reason until the Dan Brown-esque betrayal by the authority figure you trusted.
Speaking of the betrayal, it's hard for me to feel less betrayed. I've played Modern Warfare 1 and 2, and I couldn't tell you a single detail about a single character in either game other than their accents. If you want us to care about your characters, maybe you should give them some character.