It's all true, this thread. Forza is a nice game, but GT has soul, something really uncommon in modern games. However, it's not a perfect game at all.
That said, I highly disagree Forza has better physics lol. FM7 especially. But it seems FM8 or the reboot will have a highly advanced physics system at launch. Let's wait for that.
In relation to the thread, GT is really a love letter for cars, not racing. You won't find cars missing parts, having odd proportions, even having the wrong material on the cockpit. That you will find on a lot of Forza car models. The last time forza had this feeling was on FM4, with Clarkson narrating some cars.
In GT they have the designers talking about how they thought the car up, museum for the manufacturers, Vision GT collaborations, different trims of the same car, having the information and specs explained as to why there's this more lightweight version of the car, with references to the car culture of the time, like japan 90's jdm scene. It's the dream game for anyone who LOVES cars, even though they probably won't love it as much as the man KAZ. So stubborn in his ways, he makes games like this one - great potential, solid base (physics, graphics) and absolutely UNIQUE decisions - that can translate to BAD. The career mode for one is severely different than older games, which IN MY OPINION were much better. GT7 is about the love for the automobile, even more than it needed to be, so it gets stale when you don't have Endurances, Group C races, difficult event with the fastest cars on the game.
I played both and they are different games. GT7, to me is better, but FM7 is alright. Now FM4, that is a better game than GT7.