I didn't realize this is an Xbox One only comparison thread. Calling Project Cars rubbish, a game with true dynamic lighting and changing weather conditions. Runs great on PC and (arguably) on PS4 since the latest patches. Much bigger gameplay impact compared to some baked puddles.
Still looks poor on PC, still runs bad on PS4. Don't even defend a simulator which
constantly drops from 60fps compared to one which doesn't.
I laugh at the dynamic remark for the weather. It changes half-way through racing, which is cool, but it's hardly like you've got water simulation and even puddles which gives you any of the aquaplaning you get in Forza. It rains and your grip lowers, great when it was introduced, but now we've got one step further with puddles.
I'd take the more baked approach with accurate wet track modelling with puddles which are the same on the track when it rains. Yes, the water doesn't disperse, but I'd happily take that compared to just lowered grip across the board. For example, on Sebring on the tiled section on the first straight, there's smaller water puddles which gather in-between the cracks and can really mess with you. On PCars, I'd be fine flooring it down there without worrying until the first corner.
That's without me even getting started on their pathetic handling model, while they keep dropping from 60fps.