Here's the general feeling amongst the sim playing community. You have your 'racing sims'... your IRacings, Rfactor2s, GameStockCars of this world. then you have your 'semi sims'... Your Forzas, PCars, Turismos, etc. Then 'arcade racers'... NFS, Horizons, etc
...can we add "simcade" to the mix? Basically games that have their roots in the real world but have been dressed up a bit. I'm thinking of things like Horizon, DiRT, Grid etc... don't think it's fair to lump them in with Need for Speed and the like.
Forza Horizon is almost exactly FM4 with a grippier tire model, plus some improvements to its suspension and aerodynamics modelling. The grippy handling puts it in a bit of a strange place, but apart from that I'd say it's more realistic than Gran Turismo (which has its own ridiculous grippy tires to choose from), considering the way oversteer and wheelspin and general handling dynamics play out. At the very least, it doesn't belong in the same category as DiRT, GRID or NFS.
I don't see why anyone who is interested enough to go into and compare, minute details, physics and realism in racing games, as you guys do, would settle for a console. I just cant get that round my head.
I can't afford to keep up with the PC hardware race, and as much as I like driving/racing games, I'm not going to drop the cash just to play the new sims with bloated graphics that come around every once in a while. I don't really play much else on PC to justify the cost. Also, I would rather drive roadcars than a list of exclusively race-prepped machines, and the PC sim market is rather thin on that.
I do care about physics realism, which is why I continue to play
Enthusia Professional Racing while my Forza games collect dust and I haven't bothered with GT5/GT6. I also have
Live for Speed, which is what I go to when I feel like setting up my Logitech G25 for a full sim experience -- of the modern sims I've tried, none can compare to LFS, and certainly nothing around today can compare to its ability to run flawlessly on a cheap laptop.
On the other hand, I enjoy "arcade" titles as much as sims, provided the gameplay is decent and the handling is consistent/predictable. My objective isn't to play flawless simulators, but games that are fun. Realistic physics, when executed properly, just happen to be fun.