Not to take anything away from GT but you should have posted a picture of a forza car in the show room. The forza pic is gameplay and the GT pic is not.
There is one thing I will say. Regardless of show room mode or photo mode or whatever, there is ONE thing that Gran Turismo's car models have ALWAYS done better than any other racing game - car model accuracy. Forza's 69 Camaro looks quite good, but the roof line looks a little goofy to me. I see old Camaro's all the time at car shows and the roof in Forza just looks thin as paper; not how a real Camaro looks. Gran Turismo's car models have always had pinpoint accuracy, and I love that. I'm a big nazi when it comes to that sorta stuff.