I love the graphics in RoF, but I much prefer the ones in CoD.
CoD can look stunningly beautiful under certain lighting conditions (dawn with mists hanging around the fields is my favourite), but it IMO suffers badly from the popping-up of ground objects, the blurry textures in the distance and (IMHO) a rather garish colour palette.
RoF doesn't offer quite the ground detail CoD does but IMO it looks more natural, and I especially love the change in colours as you climb higher.