Actually I have to agree partially with this.
The nuke in the original Modern Warfare blew me away (lol pun intended) and was actually really emotional.
The airport though was kind of (an obvious) ploy to do the exact same thing in the next game... which is why I never liked that part of the game.
Most certainly. Art doesn't really have a definition, therefore it really is just personal opinion what you think is or isn't art.
Just in my personal opinion, something made not to tell a great story / paint a great picture / give a great experience isn't art. For example most of the games you stated (although as way2lazy pointed out, I actually forgot about one of the parts of CoD I actually felt a ton of emotion for) I wouldn't in general call very artistic but even a game like Mirror's Edge I could consider had a bit of an artistic candle to it. I loved the use of colours + the creative concept in Mirror's Edge... it's just a shame the execution seemed all wrong