Part of it was the difference between being shot on film and then transferred to HD vs. being shot on HD-Video cameras (like the CBS promo and DiscHD. Plus, they looked overly grainy to me also, which most of the time means that's the way the director wanted it to look.
Take a look at Push Nevada for an excellent example - it is really grainy because that's the way they want it to look.
Take a look at Push Nevada for an excellent example - it is really grainy because that's the way they want it to look.