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 lowerframes per second is just fine for movies, it might not be as good for things like sports and videogames.
The upper aluminum strut frames the dual headlights, while the lower strut transitions into a line that extends across the entire front end and visually lengthens the grille.