Why do people call Forza 3 an arcade racer?

Forza is better than Gran Turismo so people who are stuck on the PS3 are forced to not be able to enloy the greatness that Forza has to offer thus causing them to hate on the game. Forza is great because it's more than just a racing game. it has something for everyone. i love making vinyls out of up to 1000 layers to make an epic looking picture to put on my car.