Very interesting post
@TheCrazySwede . So given all that you said, what's your conclusion? How do you compare GT6 to FM? Are they equal, i.e. both have different flaws, but equally so, or is one clearly better than the other from a realistic physics point of view? And how much relative experience do you have in each game? (I'm assuming you use a wheel?)
(BTW... Commiefornia... cracked me up!)
Haha, glad you liked that little footnote on California. Too many laws restricting proper motoring around here!

I've been a GT fan since the very first one, and I still am. Forza I've been playing since FM2, so I would say I got a good amount of experience with both.
FM5 compared to GT6 is quite unfair, actually, but even so, GT6 does make a nice stand on its own compared to the next-gen (current-gen now, I suppose) flagship racer. Things like graphical fidelity and sounds aside, GT6 is a brilliant game. Compared to FM4, GT6 simulates weight transfer very well. Catching tank-slappers as you throw your car around a track just gave GT6 a whole other dimension of driving compared to FM4's rather dull driving feel. You see, high performance cars like supercars, for example, have a ton of grip due to their setup and tires. What this means is that you'd have to work a bit harder to lose the grip, and when you do, the car "snaps" on you. It doesn't gradually lose grip like some Fiat on skinny econ-tires. On tracks like the Nordschleife, where you start going down-hill at very high speeds, leaning your car to one side while accelerating wouldn't cause your car to slide (like it does in FM4) but instead it would lose grip completely, throw you around and perhaps even flip. Now, even though GT6 doesn't always flip your vehicle over, it doesn't slide around like FM4 as if the car has so much grip it just skids around. Take a car slightly sideways downhill at high speeds, like the first sector of the Nordschleife or the drop between Turn 1 and Turn 2 at Laguna Seca, and begin to apply some throttle and the car tosses you around in GT6. Same thing if you decelerate at speed. FM4 just doesn't do that at all, and it takes away a lot of expectations from someone like me, who has experienced these things on a real circuit and when playing the game starts to react to the situation, expecting it to happen, but then it doesn't. Oddly enough, you get torque steer in FM4, but you don't get it in GT6. FWD cars just can't oversteer in GT6 for some reason.
I believe FM5 is a huge improvement over FM4, especially in the weight transfer and the suspension simulation under load. To anyone who has played FM5, but hasn't tried it with a wheel yet, know that it's a huge difference. Currently, FM5 is the most realistic console-sim I've played. It still has that slight gradual grip loss that eases you into loss of traction a bit too much. Don't get me wrong, you do experience gradual grip loss in real life, but it just feels like FM5 has some hidden assist holding your hand a little when this happens. I've been able to recover some ridiculous spins in FM5 that I would have no chance in recovering IRL. It is a game, after all, but the FM series has come a long way.
As someone who's a fan of both FM and GT, I'm very excited for the release of FM6 and GT7.