I like that first battle video, that looks amazing, but those TheLightWorks shots look awfully artificial.
Do not forget that those are first renders. If they want to use them in a HD version they have to put there some effects to look like a filmed scene, they won't use the raw first renders. In a raw way, as first renders, they look astonishing. Add to them some more light manipulation and some graining and they could look amazing.