The action buttons ▲, X, O, ▄ are pressure sensitive. You can control brake and throttle intensity with it. You just have to be subtle with your presses.
Really now? Using my DS3 is bearable when my knee gets tired from using my DFGT, but using the D-pad is really hard for me. That's an interesting playstyle, you're a better man than me if you can handle a car that way 👍.
its no biggy really been using the d pad since ps1 days so its second nature. im terrible using the sticks though :-) and all cars are rwd . eg laptime in mclaren f1 is 6:19 - 6:22.