I’m getting the feeling the Blu-Ray’s sound mix is much like the '83 laserdisc for SW, and might not completely reflect either cam rip audio mix. I guess the major point of contention will be where these rips came from, and that I don’t know if TFA had separate stereo, mono, and surround mixes.
If it did have distinct mixes, then that’s probably why the cam rips sound different.