What is the difference between Gran Turismo and Forza?

[AE86]

Gran Turismo is a name, Forza is just a game.

GT sells amazingly, Forza is bundled. :P

They both have horrible fanboys.

GT has the support of multiple racing brands and licenses (WRC, Nascar, JGTC, D1, F1), as well as the support of many car manufacturers and tuning companies (VERY important, because they get to use the cars built by Spoon, Amuse, etc). Forza had a TV show and it sucked.

GT is made by true car enthusiasts, Forza is made by the lead singer of a metal band who has an obsession with the word definitive.

GT has horribly unrealistic tire smoke and tire screeching (the one thing that has always bothered me about GT). If I pull my handbrake in a F430 I shouldn't hear a super high pitched squeal from its 285/35 tires, such low tread depth doesn't allow for that kind of noise to reverberate, every car sounds like its driving on winter tires. It's ridiculous.

Forza is a more of a casual game, GT is more hardcore. You can tell just by comparing the menu music of the two games.

GT has TV, more cars during a race, more tracks, more cars, more features (drift mode), basically more of everything.

They have similar graphics, but we won't know for sure who wins until they release. At this point if I had to choose I'd say GT5 looks better, Forza 3 has an arcadey look that I just can't shake.

Forza wins in the sound department but not by much (comparing GT5:P to F2), they're both pretty sad as far as realistic sounds go, it's bad when NFS has more realistic sounding cars than the top 2 racing sims.

Physics are best left until GT5 and F3 are released for a fair comparison.

Forza has a number of fake or fantasy tracks, where as all of GT's tracks are real.

Forza has the ability to flip cars, but after seeing that at E3 I'm sure Polyphony digital will be adding that feature to GT5.

They will both have damage, as for who has better damage we'll have to wait and see.

Gran Turismo is like a fine wine, Forza is like a beer. Different strokes for different folks.

I'm sure I'll think of more stuff later and add it, but that about sums it up.