Sory for the late reply, I finally got to test LfS with my G2. I too have a vertical FOV of 93° listed in the options. I haven't done any testing of my FOV, and apart from a subjective difference due to fit I'm not confident I could manage to reliably hit a difference of 3° in what seems to be a manual test.
I honestly can't make my mind up whether the world scale is wrong or not. I limited myself to real life-objects, so Formula BMW on Rockingham. Without experiencing either in RL or other sims, I feel if it's off, then by so little it escapes notice. The set of lights at the end of the pits seems big, and the head of the driver is roughly at knee height of the marshall model, but that might be true to scale - I don't know. The cockpit seems right, but the driver model (besides showing its age) looks like I fit my overweight self into a racing suit.
Limiting myself to RO and FBM was more of a necessity, as with other content, the world scale in my view varied wildly: FOX felt like sitting in a bathtub with switches fit for giants instead of a snug little formula car, and Kyoto National was as massive as a 4-lane highway. Switching to a GTR, the size became much more reasonable...