We've worked many areas of the pad input for pCARS2 extensively and the consensus among our testers is that it's dramatically better than what we concede was a sub-optimal implementation for the first game.
In the last few days, after reading this post of yours again, just for the hell of it I went and tried pCARS 1 with my Steam Controller (tried meaning I couldn't get away from it for about 10 hours
). Indeed, I couldn't really find a good setup for myself, the stick always felt too sensitive to me for steering, no matter what, probably due to the couple hundred hours of driving done with a wheel (funny thing is that I initially started driving sims, GPL no less, with a controller, but I digress). I'm sure with more effort I could have improved my setup and got used to it more.
I didn't need to however, as I quickly noticed that there's a pCARS preset done by your team for the Steam Controller, which includes the gyro for steering. Boy did that improve my lap times when I could find a good steering sensitivity for low speeds and speed sensitive setting for high speeds. I was only a few tenths away from my then best time with a wheel at Oulton Park with the RUF RGT-8 GT3, not the easiest combo, although my consistency was much worse than with a wheel (again, it's probably down to practice). I was already of the opinion that good gamepad support has nothing to do with how much a title should be considered a sim, since they include all necessary analog axes for driving, but even to me the viability of the gyro for steering was an eye opener. I can honestly see myself matching my times with a wheel if I would really put myself to it.
All that said, I have a question.
How seriously are the team at SMS look at the Steam Controller as a viable control device? Will the Steam Controller preset in Big Picture for pCARS 2 match any of the default controller presets in-game (I think I had to change a few things for pCARS 1, with both in-game X360 controller presets)? Having used the alternatives from Sony and MS I'm of the opinion that Valve completely blew away the gamepad competition, with their software customization alone, in any category of games anyone cares to name. Despite that, sadly, the Steam Controller is probably still being used only by an extremely small percent of people. Ever since I bought it though I felt that it deserved so much more attention that it got from developers in general. It truly is the direct drive wheel of the gamepad world.