No no no no!!! You should try it.
I have adapted my PS1 dualshock for use on PC. Great was my surprise to see that the wheels in GPL actually turned as far as I pushed the stick
No steering help in GPL : you accelerate in a corner, so you have to steer ever less and less. You slow down towards the APEX, so you can turn your wheels more and more before you get understeer (or oversteer, depending of the setup of your car). But
you have to do it yourself, while
GT does it for you!
Same for braking : never pull the stick completely back, as I do in GT, because your wheels lock
No braking help in GPL, it's always a search for the limit, as in real life!
Then shifting : in the beginning I always made my engine over-rev, because I didn't release the throttle
Bad habit from GT ...
No you should try, it is indeed more difficult because you drive great cars, which are a challenge to handle, but the physics are so much more realistic in GPL!