I had some hands-on time with it yesterday. To give some context, I also played GT6 and Forza 5. The feel for the driving was a quite a bit weighter then I expected (RUF) so was really sat between the real / arcade racing style. Made it pretty challenging. Forza was a more smooth / accessible in comparison and felt good with the pulse triggers. I experienced a few technical hip cups with Driveclub where it would freeze for a split second and the odd bit of pop in.
The track in the demo was a good demonstration of scenery because in this build it looked gorgeous compared with the other two games. Forza and GT, which were set at Race tracks makes it hard to compare but I couldn't help but notice the rather flat textures in the landscape on Forza. However, car model wise the cockpit view was really dark for Driveclub but that was mostly due to the lighting as you go past trees. The lighting in Forza almost felt as if it were trying to hide some of the blemishes since it is all pre-backed. Looked less natural. Car models looked gorgeous though.
I was actually most surprised by GT6. They have made some great changes to feel of the car...but that is also further highlighted due to setup of wheel and pedals. The lighting was also impressive along with the presentation.
I think all three will do really well and I liked a lot of different aspects from each. You get used to the HUB in Driveclub but I'd prefer it if they would tone it down a bit by making it less obtrusive / subtle.
Ill definitely be putting in some time to Driveclub come launch day