Didn't even mention the title, just mentioned it in passing. Seems like he focused on the unrealistic fun-style shooters like Battlefield and Call of Duty rather than realism-based ones like AA and ARMA. Not that a game is realistic but different developers have different goals.
i watched the entire video, he shortly spoke about AA and ArmA, they're both obviously going to hit a smaller target, the teamwork can be much more satisfying than your average Call of Duty or Battlefield gameplay but of course it's going to take more time and dedication that not everyone is going to be willing (and maybe able, time wise) to spend. Not to mention, it's easier to satisfy a bit of personal ego on "easier" games.