The answer my friends is empty meaningless posturing. The sickening reality of this entire debate is that its by and large propagated by people that aren't necessarily fans of the games, or even fans of the genre. Were they either of those they would have fundamentally understood the issues long ago, and more to the point they would understand there is nothing to debate.
Here is the cold hard truth. When it comes to racing the 360 is the premiere platform. The console has four games in this genre with over a 88% score on Gamerankings compared to the PS3 which only has one, and no I don't want to hear crap excuses why these compilations are wrong. You know you are full of shit, and I know you are full of shit. So lets leave it where it lies.
So if your a true genre fan you know where you should be playing, and no genre fan can ever be satisfied with just one game. That is neurotic nonsense I don't care how good the sex is you will want more sex in the future, and more people to have sex with. What we have here is just two games that look like they will be really good, but your not actually fans are you. A real fan would actually be torn about missing one or the other.
This isn't about the games. You could give less then a damn which is actually better, or how they are different. All you care about is what they mean to your consoles, and frankly here is a little secret. The fact that we have two nearly identical games means that they cancel each other out. They don't actually effect the respective quality of the consoles one bit.
Basically your bitching as if your really cared, but you don't really care. You never did all it is to you is a propaganda tool.