It's designed for a joypad, so of course it needs to have some give and take with regards to making it feel right without making it impossible to control. I know you CAN use a wheel, but it's designed with the 100% market in mind - all console owners have pads, far fewer have wheels as well.
LFS, on the other hand, is a nightmare to control via a joypad and that's the reason I can't play it online any more. It's all about target markets.
I love both Forza on the 360 and GT5P on the PS3. They both feel right with regards to physics. Realistic, the feeling of weight when you launch the car into a corner, but still controllable on the tiny turning range of a joypad. Looking forward to FM3 and GT5 in about equal measure.
I want to try Enthusia though - makes me wish I had a backwards compatible PS3