Another awesome comparison from MotoGamesTV. This time a sim battle.
Spa-Francorchamps Comparison - Assetto vs Forza 6 vs pCARS vs R3E [4k]
Hard to tell which looks better graphically tbh, though I feel Project Cars has the most lifelike lighting or colour palette, but obviously that's reliant on time of day differences just as much as the tech or lighting. They all look pretty good tbh. Just certain environmental elements like tree's etc letting things down. Assetto also looking quite realistic, but a tad washed out in places. Forza has a nice richness to it, though there's a bit of an orangey or warm tone about it, almost like there's a filter to the camera. RaceRoom somewhere in-between.
I think they all lack an accurate visual representation of suspension feedback, with Project Cars coming the closest to honest.
Although not graphics, still interesting to note, audio wise, Assetto leads the pack with a very honest reproduction of the vehicles sounds, Project Cars taking second (they got the gear changing and down shifting pinned down pretty well, but not quite as accurate on the general engine note), followed by RaceRoom (still a bit exaggerated and clicky), and Forza coming in last (both the engine note and gear changing/shifting are just off).
Here's the real thing for comparison's sake.
Onboard Classix: Mercedes Benz SLS AMG GT3 LD Arnold & C. Brück VLN 4.Lauf 2011
Having spent only a little time with Assetto, I honestly think it's likely to be the best sim racer on these systems in terms of accurate physics and audio reproduction, can't really say regarding graphics without a proper A to B comparison, ideally not one where the gameplay is being downsized to a smaller window. Be interesting to see how the console versions hold up graphically once they're released.