I have bought and tested rF2 beta for a couple of days and here is my conclusion:
If you want entertainment and sense of speed then rF2 60´s F1 cars on spa is a treat.
If you want realistic physics and an in depht DRIVING SIM, look elsewere.
The FFB is good but the physics are not. This gives you a very detaliled feeling of road surface, but not of grip, weight transfer etc. The physics doesnt seem to respond very well to your input either. Just a simple; Skid>countersteer full lock>recovery.
I hope this changes during the beta stage because there are many other good aspects of rF2. Unfortunatly for now it feels like they tried to distract you from the driving itself with fancy features.
After trying the rFactor 2 beta I really hope Scavier will bring the updates in 2012 because after a couple of hour of testing I found myself back in LFS thinking: hmm this feels alot more like driving...
Graphics in LFS are imo better and a LOT faster as well.
I guess we´ll see after the beta period but for now I cant help feeling underwhelmed with ISI´s next generation title.