Again, I would like to know why the TG's "Related Verses" differs so much from SSG's "Passages" - I wouldn't expect equality. But even more, I would like to be able to convert both sections into Passage Lists for comparison and a work pick list.
"See also" references in the Topic Guide are gathered automatically from LCV resources, and ordered roughly by how many dictionaries include them, in a kind of voting scheme. So a lot depends on what resources are gathered around this topic, and you'll sometimes see things whose inclusion is a little puzzling
SSG Key Passages, on the other hand, are curated to be illustrative of this particular theme. So they should generally be much higher quality.