[Kromm]

Yeah, the difference is that Second-Class Citizen [-5] means you're a person who's regarded with vague distaste (-1 to reactions); Valuable Property [-10] means you're a non-person owned by a legal person, and thus covered by property laws (though perhaps ones specially worded for living chattels) rather than by laws pertaining to human rights; and Subjugated [-20] means you're a non-person who's regarded with vague distaste (i.e., the bad sides of both of the above), with the added downside that you're not even valuable property protected by law, so the only laws that apply to you are ones that give all legal persons leave to do whatever they feel like to you (which is where the extra -5 comes from).

Subjugated is supposed to be roughly as bad as Enemy (Entire culture; Hunter; 6 or less) [-20], but with the "6 or less" part replaced with "if you decide to do anything but be a slave." The idea is that nobody in such dire straits would be dumb enough to run without near-assured success, which is so rare that it's about equivalent to 6 or less. Valuable Property, by comparison, is more like Enemy (Entire culture; Watcher; 12 or less) [-10]: in all but the most private of circumstances (equivalent to 12 or less), everything you do is dogged by people who question and keep tabs on what you're doing.