I enjoy both LFS and rFactor, but in rFactor I can only get enjoyment out of my own cars. I feel many of the rFactor haters have not given it a real enough chance. I do play LFS and rFactor enough and have a love/hate relationship with both.
There can be plenty of subtlety in the handling in rFactor, and while not perfect, neither is LFS at the moment.
rFactor is certainly NOT unrealistic per-se, but yes, 99% is poorly made content.... LFS is much better out of the box. But when talking about the pure driving experience, not the dodgy menus, weird settings and framerates or input lag.. Just offline testing at high fps on a system where it actually runs smoothly, I think I'd give rFactor the edge in handling over LFS, realizing that in some areas LFS might be a bit ahead, and in other aspects rFactor wins.
But for rFactor I have 2 or 3 cars, the 2234123424 mods are almost always rubbish.