I strongly disagree. In my mind, PCARS2 (as of 3.0) is proof that no sim is "too realistic" to be played with a controller, as I have always asserted. All it requires is a commitment from the developer to properly translate the player's input, instead of half-assing it or treating the X-axis like it's a wheel as most PC sims have always done. I think SMS is now close to the mark, even while remaining committed to their intention to not make the steering too accommodating.
It's true that the steering in some cars is still too wild to manage, but only those specific cars, while anything else is as tame as can be. It appears to be something SMS is quietly fixing, because version 3.0 transformed at least one car from being utterly undrivable to the easiest car to drive in its discipline (the OMSE RX Lite). With the right cars, driving and drifting requires less mental effort on my part than it takes to grapple with the physics eccentricities of a game like
GT Sport or Forza.
For anyone who still has trouble, all I can do is
offer my own settings. No racing game is for everyone; I couldn't believe how awful the steering in the
GT Sport beta was, and or how sedated and reluctant Forza's "Normal" steering is these days, different from what I remember on XB360 (but it's been a little while).