Many people like to discuss HD formats not only in their resolution but also the amount of frames displayed per second (720p60, 1080p30, etc.), and while lower frames per second is just fine for movies, it might not be as good for things like sports and videogames. I'm not sure if I agree with all the points however, since they seem to assume most games run at 60fps, which while some early 360 games have (DOA4, NBA 2K6), some have not (PGR3). I think it's fair to assume we'll see higher target framerates in upcoming games, especially twitch shooters like Halo 3.