I can sort of agree with them, western game music is very good atmospherically, but often it doesn't stand out in the way of japanese game music.
It seems odd that people are citing Mass Effect, Half-Life and The Elder Scrolls as examples of western music that disproves this. They fall smack bang in what the article describes: the do a damn fine job setting the scene, but once I've turned off the game I struggle to recall the tune.
It might just be the trend that Japanese developers have for leitmotifs. Take Final Fantasy, nearly every character has their own tune. Metal Gear Solid takes the best of both worlds, with its distinct tunes for each situation, interspersed with dramatic background music.