Speed is the pornography of video games. Like adding skin to a film, adding speed to a game isn't usually about making the game a more thoughtful experience. It is about exciting its audience's instincts on the most visceral level possible.
Spec-Ops: The Line has been critically lauded as a game that takes a hard, self-aware look at the shooter genre. But all good shooters are self-aware. It's how they're able to distill conflict into something fun that matters.
Call of Duty has nothing to do with the reality of World War II. It is a heroic version of an idea that we hold about being in a war that most us of don't remember, but only understand through movies and books.