The car set ups that come with the demo are poor, I agree. And if you don't understand how to set up a car or can't understand what needs to be adjusted, you will struggle with this game. Also, if you're used to driver aids, arcade racers, only know two positions for the accelerator and brake triggers, again, you'll suffer.
This is far more of a sim than most racers, and certainly more simulation than any console rallying game I've played in the past. But once the cars are set up properly the game is really good. Admittedly it's got a far steeper learning curve than most but once you realise that braking heavily and turning on a gravel surface will give you the same result in game as you'd expect in real life you'll realise how amazing this game is.
Judging by the settings required by most online gamers I'd say this game is definately not for the arcade loving majority. It's not as pretty as many other racing games and in an age when graphics are a bigger selling point than gameplay or simulation I suspect many will miss out on this.