That's why it is a big deal that the next Halo will be 60fps. Additionally as I've been saying, all games will look 'great' by virtue of the hardware that it's running on. People should focus more on control and frame rate so that games play better.
Halo isn't launching with the console.
Who's to say that Killzone 4 with more dev time won't be running 60FPS? Sony is clearly rushing this title out to be a launch exclusive title.