You could see that at Watkins last year badly, he was the only one who could keep the car glued to the road at all times, had a proper racing line and was able to take an extra pit stop over the front guys yet never looked like he was out of contention.
He does lack the car though, if you watch last years race at Watkins Kyle Busch was sliding on basically every corner with no proper racing line and yet wasn't that much slower.
There not changing, its pretty much them making 2 games, Forza Motorsport Titles tend to come out every 2 years which means there is still another year to go before the next Motorsport version comes out.
Its a good game from what I hear and with decent physics should put it leagues ahead of TDU, but im hearing nothing about Online Free roam at this stage, and without it its Basically Need for speed most wanted.