I play a fair mixture of Japanese and Western video games, though I'm finding it kinda funny that despite buying a Japanese Xbox 360, I've been playing a lot more Western stuff than the games I originally intended to buy a Japanese system for (and if you account for my PC games, most of them are from Western developers too).

I don't think my parents really care about the games I play, but I don't like showing them off to them either. They'd be confused if they walk in on me playing iM@S, but I think they've usually been seeing me play things like Forza Motorsport 4 (probably my favorite game of 2011, and by the way, it's a Western game that doesn't involve violence. I'm pretty sick of that stereotype) or Battlefield 3 (by the way, I'm Asian and I love playing Western games, some of them I enjoy loads more than iM@S, in response to that one blog post).
One thing I will agree with, in regards to war games, is that there seems to be a slight difference in their focuses. This point is still a little bit naive, but bear with me. What I feel makes some Western FPS fun (Call of Duty probably applies to this point more) is that they badassify war to the point where it's outright obnoxious and fun to just run around and shoot stuff in. A war game coming from a Japanese developer such as Ace Combat series (minus Ass Horizon) still badassified dogfighting and the such, but the story also told more than just killing faceless enemies. They showed the causes and effects of putting the nation in war, and gave the player a little more of an emotional reason to fight than just for the sake of running around and being a badass one-man-army.
There are still some Western FPS that provide amazing stories though, I personally liked Medal of Honor 2010 (yes, the game sucked, but the story was a nice tribute to the troops still), Deus Ex: Human Revolution (the primary reason that science fiction exists is to expand and inform on a current-world issue in a futuristic setting), and of course, the Half-Life series.