I think a lot of the people comparing DC to FH3 really don't know the technology behind DC. The worse comment by far is that FH3 "is open world". Open world does not mean draw distance is better, it certainly does not mean that and LOD is better, as in the case of FH3 where it's clearly not. It only means you can drive anywhere within the confines of the entire map. An open world game does not win a graphics debate because it's open.
I'm pretty sure a dev can create an open world racer with great draw distance and level of detail that resolves well way into the distance, but FH3 has not done that, yet nobody is blaming the devs, they are working through the limitations of the hardware. So DC may have linear tracks, but it's draw distance is massive on any track/location...more so than in FH3, that says a lot. As a linear racer they could have skimped on a lot of details, they didn't need such a massive draw distance, but they went there anyway.
The biggest takeaway is the amount and also quality of detail you see way into the horizon or the amount of detail that exists way above the immediate driving atmosphere in the clouds etc... This is certainly not a linear game skimping on details in the traditional sense. Before you approach bridges in DC, you see them from far away on approach, they're all massively detailed, the water bodies below them or elsewhere move and look real and don't appear like flat textures on approach. Couple that with cars on these tracks locations that never skimp on detail, high poly high detail cars, perhaps some of the most impressive cockpits we've seen in a racer with a detailed enough driver, wipers that animate superbly. Then we have the excellent lighting that impacts all these high end assets and details, when the sun hits the glass approaching a corner in India, it's almost blinding. Hell, you see dry streaks on your windshield in dry weather when the sun hits the glass. Cars stay wet and actually look wet when they go through torrential periods, brake calipers hot up and are visible during certain race cams.
As a linear racer they could have skimped on a lot of details, they didn't, they could have skimped on draw distance, they didn't, they could have made water bodies that are much further away from the player look flat on approach like FH3 does just a few feet away but they didn't, they could have made mountains 2D bitmaps, flat or untextured but they didn't. They could have baked their lighting to save performance or suit a linear track profile, they didn't. They could have skimped on their cloud render and skyboxes with a cheaper alternative, they didn't. That's the point really, so many areas that people would not immediately notice they could have skimped detail, but chose not to.
The point is, in any scene in DC, with it's huge draw distance, a high level of detail in the environs/track/location, better looking and more detailed cars, better lighting, better effects (debris, weather-rain, lightning, precipitation changes, dry weather-dust pickup etc.) POM, quality of foliage..DC is always doing much more than FH3 per scene. So if one says they prefer how FH3 looks, that's fine, they may prefer the sunnier locales but technically it's not even close and visually there's no doubt which racer looks more authentic and more visually stunning. That's why when you do a video comparison with all racers, it's not even a contest, some racers look comical in contrast and this is where all the high detail, great lighting and volumetrics of DC comes together.
One thing is sure, I've zoomed in on many details in DC and it's amazing how much they didn't skimp on. I've zoomed in on trees, water sources, rocks, cars, mountains, they're all pretty kosher. I'm sure there are some shitty compressed Jpegs of DC out there showing stuff no one else have noticed during extended play, but all the pics I've shown of FH3, even the video of the hummer were pretty good quality. The pics were PNG at least. There's no need to be disingenuous about it.