I definitely agree, though UX is never really associated with this level of interaction. The way the engine responds to your movements through a controller relates directly to your experience. Bad physics would yield unwanted results, thus giving the user a bad experience.

I only work on interfaces, but I’ve always thought I’d be good at “designing” game physics, or at least testing and relaying needed adjustments. It all come down to getting something to work as efficiently as possible, I suppose.