im not a racing fan or a fanboy but i see alot of hype about this game and saying its better then gt5

Forza 3 has the incredible realism of GT series, but it has the ability to add handicaps like the little arrows you see in the videos when someone is driving.  The more handicaps you have on the lower you reward is for winning races, but what it does do is make it a much lower entry level game without sacrificing the sim aspects of the game.  So racing sim fans will turn off all the assist like the guider line and the no wear on tires and such.

so 1 thing makes up all the hype?

well its a racing franchise exclusively on the xbox as gt is exclusively on the playstation. ever since forza came out, it has done things that gt hasnt done yet including damage, more realistic physics, and customization. with forza 2, it beat the gt franchise to cinlude online gameplay and with forza 3, it seems to take all the pieces together and make it an ultimate package.

The features that go into the 3rd game makes forza feel like a sim that everybody can enjoy regardless or level. pointed above, the driving lines have been improved for a better realistic driving experience, and u will get more rewards for winning races. Ever notice y when u brake, the rims turn red, that's the physics of heat and friction working together on the tires.

So the point is forza 3 is able to deliver many advance features into a racing game that includes damage, physics, customization, and online. now that it includes 400 cars with ~1 mil polygons each and 100 tracks vs 14 from forza 2, a big improvement is coming.