I think GT5 has more vibrant colours to be honest and much more realistic lighting.

Forza 3 looks more washed out with lower contrast.

This is the order anyway:

1st: GT5 Top
2nd: GT5 Bottom
3rd: GT5 Bottom
4th: GT5 Bottom
5th: GT5 Top

Hang on a second, since when did this become a argument about 360 and PS3? We are talking about Forza 3 and GT5, not "teen consoles".

What i can't get my head around is this whole stereotype you just put up. So people who play Gran Turismo are the true hardcore family, who are not teens, don't like shooters, and own a PS3.....right.....

So all those people on http://forums.forzamotorsport.net/forums/default.aspx which is one of the most populated and active racing game forum on the planet is full of "teens". Ones that seem to have a knowledge of how to build engines, how to change the most minute detail in a set-up to get the most out of their car, know how to pace the tyres on their car in a 24hr race, can tune any aspect to overcome their various problems etc etc, know how to design cars to an unbelievable level that has resulted in actual car companies themself speaking to these people to help develop real cars are "teens"? You are of course 100% right! A lot of these people are teens. I was in my teens like 8 years ago. How does that = bad? These people are car nuts, they love everything about cars.

The people who play Forza ARE THE GT COMMUNITY, look on the GT forums and your even see a Forza section...! It is this thing that makes your rant look so silly and nothing more then a rant about how PS3 people are better then everyone else....So those people who like GT have not played any other games since the last GT came out like 5 years ago? Those people would of passed up on this gen and the internet age and wait for the new GT game? Those people in their 20s will not buy anything other then a Sony format to play their games?

But again, ok whatever...

I am sure some proper racing fans who play Forza will be along to destroy your post. Because in Forza there are different settings. Different levels of driving aids, you know the same aids that GT now has in GT5? It's default settings are there to help people who don't normally play racing simulation games play and enjoy it. But anyone who plays Forza and is good at racing games turns those off But whatever, the great thing about Forza is you can look at peoples records to see how well they have done. You claim it is easy and you broke all these records etc...So what is your live name and i will go get those times to share with everyone else?

You're wrong on pics 2 and 4.

Picture 2: GT is the bottom picture, that's the Tokyo R246 track that only exists in GT

Picture 4: The top picture is the dashboard of a Audi R8 in the Camino Viejo Track on Forza 3. Lower pic is the Dashboard of the Nissan GT-R in the Daytona Speedway track on GT5:P

Wow, are you serious? True Ray Tracing!! Um, No.

Anyways, this is not that hard.

GT5 is

1. Top 2. Bottom 3. Bottom 4. Bottom 5. Top

Looool, not only did he made that huge blunder regarding ray tracing, he even said in the fourth top picture you can see head tracking. Head tracking from a photo mode picture from a replay

I know!! Well he was right on one part of #4. It is the easiest to tell the difference. Yet he still got it wrong.

Yup, especially for non GT fans, that was the easiest one. After reading the whole thread, i'm quite in shock on how many "GT fans" missed to accurately tell the pictures apart. I mean, 4/5 of the pictures are only on one of the most emblematic tracks on every GT

lol just a guess I don't play racing games that often not exactly a genre I like very much. the 2nd one I wasn't sure about. as for the fourth one. yeah was well off. :(  the reflection on the car in front was what throw me the most and then no reflection on the body work on the bottom was what caught me out. anyway the OP has a really good point.

Yup, but the problem was that it didn't just mix up GT5 replay pics, it also showed GT5:P replay pics. GT5:P didn't had quite an updated lightning engine as GT5 has. 

And the reflections/no reflections also depends on the type of paint (glossy, metallic or regular paint) that each car has. So some cars will have quite some reflection details and others will have very few reflection details. To actually get this (small) detail right, is quite a challenge for racing games developers.