Left trackpad on Steam Controller does actually work pretty well for movement and driving...but I'm way more precise with the latter on the DualSense
navigating menus is a lot nicer with an actual d-pad
having both a trackpad and a right thumbstick is helpful here too
Shooting guns...I think I even prefer that on the DualSense because the gyro feels that much better than the SC's, even considering the less convenient activation